id stringlengths 36 36 | document stringlengths 3 3k | metadata stringlengths 23 69 | embeddings listlengths 384 384 |
|---|---|---|---|
3dde04a9-f727-4939-972d-85c2893bb9d6 | UK property prices
example dataset tutorial,
except for the
ON CLUSTER
clause and use of the
ReplicatedMergeTree
engine.
The
ON CLUSTER
clause is designed for distributed execution of DDL (Data Definition Language)
queries such as
CREATE
,
DROP
,
ALTER
, and
RENAME
, ensuring that these
schema changes are ... | {"source_file": "01_1_shard_2_replicas.md"} | [
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-... |
cb1f2a98-3a46-4716-a44d-21f7a0bbcf98 | But what will happen if one of the hosts is down? To simulate this, stop
clickhouse-01
by running:
bash
docker stop clickhouse-01
Check that the host is down by running:
bash
docker-compose ps
response title="Response"
NAME IMAGE COMMAND SER... | {"source_file": "01_1_shard_2_replicas.md"} | [
0.029537230730056763,
0.04086853936314583,
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0.021894145756959915,
0.030435217544436455,
-0.... |
8806c455-0fba-4e26-b2ac-b86f8c4e1ec0 | If at this stage you would like to ingest the full UK property price dataset
to play around with, you can run the following queries to do so:
sql
TRUNCATE TABLE uk.uk_price_paid_local ON CLUSTER cluster_1S_2R;
INSERT INTO uk.uk_price_paid_local
SELECT
toUInt32(price_string) AS price,
parseDateTimeBestEffortUS... | {"source_file": "01_1_shard_2_replicas.md"} | [
0.10348768532276154,
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-0.0016279519768431783,
-0.0415... |
1e1cbdc2-68de-4a4f-b9c3-f486b65c4953 | slug: /architecture/horizontal-scaling
sidebar_label: 'Scaling'
sidebar_position: 10
title: 'Scaling'
description: 'Page describing an example architecture designed to provide scalability'
doc_type: 'guide'
keywords: ['sharding', 'horizontal scaling', 'distributed data', 'cluster setup', 'data distribution']
import... | {"source_file": "02_2_shards_1_replica.md"} | [
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0.12209729850292206,
-0.029... |
5e8700df-c89a-4318-9a00-ff7900409671 | Create clickhouse-keeper directories
for i in {01..03}; do
mkdir -p fs/volumes/clickhouse-keeper-${i}/etc/clickhouse-keeper
done
Create clickhouse-server directories
for i in {01..02}; do
mkdir -p fs/volumes/clickhouse-${i}/etc/clickhouse-server
done
```
Add the following
docker-compose.yml
file to the
c... | {"source_file": "02_2_shards_1_replica.md"} | [
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0.026039952412247658,
... |
2cf8e929-0788-43ce-83e6-5af9b3f7ac41 | for i in {01..02}; do
mkdir -p fs/volumes/clickhouse-${i}/etc/clickhouse-server
done
```
Add the following
docker-compose.yml
file to the
clickhouse-cluster
directory:
yaml title="docker-compose.yml"
version: '3.8'
services:
clickhouse-01:
image: "clickhouse/clickhouse-server:latest"
user: "101:101"... | {"source_file": "02_2_shards_1_replica.md"} | [
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-0.008266160264611244,
... |
62e7f0c6-23fd-4117-8a1b-ebaa043eb54c | Create the following sub-directories and files:
bash
for i in {01..02}; do
mkdir -p fs/volumes/clickhouse-${i}/etc/clickhouse-server/config.d
mkdir -p fs/volumes/clickhouse-${i}/etc/clickhouse-server/users.d
touch fs/volumes/clickhouse-${i}/etc/clickhouse-server/config.d/config.xml
touch fs/volumes/clickhouse... | {"source_file": "02_2_shards_1_replica.md"} | [
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... |
69f5d85f-34a9-4b14-ab70-2396296abd78 | | Directory | File |
|-----------------------------------------------------------|-----------------... | {"source_file": "02_2_shards_1_replica.md"} | [
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-0.010443735867738724,
-0.0... |
57617411-c839-46f1-b77b-65b0e745edb4 | Set up of ClickHouse Keeper is explained in the next step of the tutorial.
xml
<zookeeper>
<node>
<host>clickhouse-keeper-01</host>
<port>9181</port>
</node>
<node>
<host>clickhouse-keeper-02</host>
<port>9181</port>
</node>
<node>
<host>clickhouse-keeper-03... | {"source_file": "02_2_shards_1_replica.md"} | [
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0.10811731219291687,
-0... |
419bd001-8699-412e-a0da-8166fdb58e2c | Configure ClickHouse Keeper {#configure-clickhouse-keeper-nodes}
Keeper setup {#configuration-explanation}
| Directory | File ... | {"source_file": "02_2_shards_1_replica.md"} | [
0.013806043192744255,
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-0.01752799190580845,
0.014089713804423809,
-0.... |
c970ab2e-8ac4-470b-8c65-284f788d6a4e | With this, you have successfully set up a ClickHouse cluster with a single shard and two replicas.
In the next step, you will create a table in the cluster.
Create a database {#creating-a-database}
Now that you have verified the cluster is correctly setup and is running, you
will be recreating the same table as the... | {"source_file": "02_2_shards_1_replica.md"} | [
0.10623123496770859,
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-0.11910367757081985,
0.10976772010326385,
-0.018378... |
cf2343be-a536-40cf-8e95-dd38f594a5ed | Notice that it is identical to the query used in the original
CREATE
statement of the
UK property prices
example dataset tutorial,
except for the
ON CLUSTER
clause.
The
ON CLUSTER
clause is designed for distributed execution of DDL (Data Definition Language)
queries such as
CREATE
,
DROP
,
ALTER
, and
REN... | {"source_file": "02_2_shards_1_replica.md"} | [
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-0.13799318671226501,
0.08566639572381973,
-0.0831... |
6869290b-7cec-4f3c-aab1-25cce3a18f23 | sql
SELECT * FROM test.test_table_dist;
sql
ββidββ¬βnameββββββββββββββββ
1. β 1 β Alexey Milovidov β
2. β 1 β Clicky McClickface β
ββββββ΄βββββββββββββββββββββ
Let's do the same for our UK property prices data. From any of the host clients,
run the following query to create a distributed table using the ex... | {"source_file": "02_2_shards_1_replica.md"} | [
0.044087015092372894,
-0.04167783632874489,
-0.04712659493088722,
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0.07292570918798447,
0.04506516084074974,
-0.14588144421577454,
0.07635798305273056,
-0.049... |
bf035ab2-afd1-4fc6-b338-f327389433f8 | What will happen if one of the hosts fails? Let's simulate this by shutting down
clickhouse-01
:
bash
docker stop clickhouse-01
Check that the host is down by running:
bash
docker-compose ps
response title="Response"
NAME IMAGE COMMAND SERVICE... | {"source_file": "02_2_shards_1_replica.md"} | [
0.02092655561864376,
0.011635604314506054,
0.017061812803149223,
0.009041232988238335,
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0.02639090083539486,
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-0.0014253563713282347,
0.04748421907424927,
-0.019... |
137f0d60-0f54-4924-be6f-14ce31ddfe49 | slug: /architecture/cluster-deployment
sidebar_label: 'Replication + Scaling'
sidebar_position: 100
title: 'Replication + Scaling'
description: 'By going through this tutorial, you will learn how to set up a simple ClickHouse cluster.'
doc_type: 'guide'
keywords: ['cluster deployment', 'replication', 'sharding', 'high ... | {"source_file": "03_2_shards_2_replicas.md"} | [
0.04255568981170654,
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0.043741390109062195,
0.0012877177214249969,
0.12157833576202393,
-... |
1cab76da-4c61-4b42-83a0-5dbc50d070e6 | yaml title="docker-compose.yml"
version: '3.8'
services:
clickhouse-01:
image: "clickhouse/clickhouse-server:latest"
user: "101:101"
container_name: clickhouse-01
hostname: clickhouse-01
volumes:
- ${PWD}/fs/volumes/clickhouse-01/etc/clickhouse-server/config.d/config.xml:/etc/clickhouse-serv... | {"source_file": "03_2_shards_2_replicas.md"} | [
0.043049074709415436,
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0.0319284126162529,
-0.030096836388111115,
-0.03245821222662926,
0.0410... |
d943752f-4945-44db-aba2-714b36b1aab5 | clickhouse-keeper-02:
image: "clickhouse/clickhouse-keeper:latest-alpine"
user: "101:101"
container_name: clickhouse-keeper-02
hostname: clickhouse-keeper-02
volumes:
- ${PWD}/fs/volumes/clickhouse-keeper-02/etc/clickhouse-keeper/keeper_config.xml:/etc/clickhouse-keeper/keeper_config.xml
p... | {"source_file": "03_2_shards_2_replicas.md"} | [
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0.012263922020792961,
0.020870396867394447,
0.... |
ea059318-0b6a-41d4-a492-7f5e408e601e | Create the following sub-directories and files:
bash
for i in {01..04}; do
mkdir -p fs/volumes/clickhouse-${i}/etc/clickhouse-server/config.d
mkdir -p fs/volumes/clickhouse-${i}/etc/clickhouse-server/users.d
touch fs/volumes/clickhouse-${i}/etc/clickhouse-server/config.d/config.xml
touch fs/volumes/clickhouse... | {"source_file": "03_2_shards_2_replicas.md"} | [
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0.047530703246593475,
0.0... |
5b2ea83a-799e-4093-a9c5-9b0bb78f45a6 | | Directory | File |
|-----------------------------------------------------------|-----------------... | {"source_file": "03_2_shards_2_replicas.md"} | [
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0.04473418369889259,
-0.010443735867738724,
-0.0... |
e194440c-f00c-4d65-9659-9720b3fb71dc | Set up of ClickHouse Keeper is explained in the next step of the tutorial.
xml
<zookeeper>
<node>
<host>clickhouse-keeper-01</host>
<port>9181</port>
</node>
<node>
<host>clickhouse-keeper-02</host>
<port>9181</port>
</node>
<node>
<host>clickhouse-keeper-03... | {"source_file": "03_2_shards_2_replicas.md"} | [
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0.10003921389579773,
... |
d5a2bec5-cb71-4bba-bae8-29cb3e58dbe0 | bash
docker-compose up -d
You should see docker begin to pull the ClickHouse and Keeper images,
and then start the containers:
bash
[+] Running 8/8
β Network cluster_2s_2r_default Created
β Container clickhouse-keeper-03 Started
β Container clickhouse-keeper-02 Started
β Container clickhouse-ke... | {"source_file": "03_2_shards_2_replicas.md"} | [
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0.04845904931426048,
-0.018... |
4bb43711-77da-4679-a6c9-0094e0102423 | You can run the query below from clickhouse-client of each host to confirm that there are no databases created yet,
apart from the default ones:
sql title="Query"
SHOW DATABASES;
response title="Response"
ββnameββββββββββββββββ
1. β INFORMATION_SCHEMA β
2. β default β
3. β information_schema β
4. β sy... | {"source_file": "03_2_shards_2_replicas.md"} | [
0.07225564122200012,
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-0.09079286456108093,
0.12183737009763718,
-0.0... |
7fa4002f-542a-446a-8d22-29ebd68c2580 | The
zoo_path
parameter can be set to anything you choose, although it is recommended to follow
the convention of using prefix
text
/clickhouse/tables/{shard}/{database}/{table}
where:
-
{database}
and
{table}
will be replaced automatically.
-
{shard}
and
{replica}
are macros which were
defined
pre... | {"source_file": "03_2_shards_2_replicas.md"} | [
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0.10524451732635498,
-0.01030758... |
a8607c8c-b01d-4bbe-a96c-9c6ac6d6b5e7 | Run the following query to confirm that the data inserted has been evenly distributed
across the nodes of our cluster:
```sql
SELECT count(*)
FROM uk.uk_price_paid_distributed;
SELECT count(*) FROM uk.uk_price_paid_local;
```
```response
βββcount()ββ
1. β 30212555 β -- 30.21 million
ββββββββββββ
βββcount(... | {"source_file": "03_2_shards_2_replicas.md"} | [
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0.10989545285701752,
-0.03166... |
9151746e-12a3-449a-89e5-3024b85c4c05 | slug: /whats-new/changelog/2021
sidebar_position: 6
sidebar_label: '2021'
title: '2021 Changelog'
description: 'Changelog for 2021'
doc_type: 'changelog'
keywords: ['ClickHouse 2021', 'changelog 2021', 'release notes', 'version history', 'new features']
ClickHouse release v21.12, 2021-12-15 {#clickhouse-release-v21... | {"source_file": "2021.md"} | [
0.019845636561512947,
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0.0640878900885582,
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0.028... |
8a58a76e-5246-4e70-9bb6-ffe212bc6e30 | Basic access authentication for http/url functions.
#31648
(
michael1589
).
Support
INTERVAL
type in
STEP
clause for
WITH FILL
modifier.
#30927
(
Anton Popov
).
Add support for parallel reading from multiple files and support globs in
FROM INFILE
clause.
#30135
(
Filatenkov Artur
).
Add support for ... | {"source_file": "2021.md"} | [
-0.1148177981376648,
-0.006419754587113857,
-0.11505281925201416,
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0.061094243079423904,
-0... |
a98dca12-5991-41cb-86b9-b37c4107d8ca | Aliyun OSS Storage support.
#31286
(
cfcz48
).
Exposes all settings of the global thread pool in the configuration file.
#31285
(
TomΓ‘Ε‘ Hromada
).
Introduced window functions
exponentialTimeDecayedSum
,
exponentialTimeDecayedMax
,
exponentialTimeDecayedCount
and
exponentialTimeDecayedAvg
which are more ef... | {"source_file": "2021.md"} | [
-0.056933868676424026,
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-0.052509475499391556,
0.016490699723362923,
-0.00... |
a1adaacb-ce04-4c81-beda-92896690f718 | Optimize function
mapContains
to reading of subcolumn
key
with enabled settings
optimize_functions_to_subcolumns
.
#31218
(
Anton Popov
).
Add settings
merge_tree_min_rows_for_concurrent_read_for_remote_filesystem
and
merge_tree_min_bytes_for_concurrent_read_for_remote_filesystem
.
#30970
(
Kseniia Sumaro... | {"source_file": "2021.md"} | [
0.03022778034210205,
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-0.05... |
5e0eb917-39c9-43c8-abeb-830f0d3eea30 | MaterializedMySQL
: Fix issue with table named 'table'.
#31781
(
HΓ₯vard KvΓ₯len
).
ClickHouse dictionary source: support predefined connections. Closes
#31705
.
#31749
(
Kseniia Sumarokova
).
Allow to use predefined connections configuration for Kafka and RabbitMQ engines (the same way as for other integration ... | {"source_file": "2021.md"} | [
0.03710184618830681,
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0.04857088625431061,
-0.0348... |
b1d7798a-b150-4c8b-b24f-9d5951848107 | Enable multiline editing in clickhouse-client by default. This addresses
#31121
.
#31123
(
Amos Bird
).
Function name normalization for
ALTER
queries. This helps avoid metadata mismatch between creating table with indices/projections and adding indices/projections via alter commands. This is a follow-up PR of h... | {"source_file": "2021.md"} | [
-0.018828708678483963,
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... |
1d832c0c-ddaa-48ca-a067-d5e9c1098758 | Fix usage of
Buffer
table engine with type
Map
. Fixes
#30546
.
#31742
(
Anton Popov
).
Fix reading from
MergeTree
tables with enabled
use_uncompressed_cache
.
#31826
(
Anton Popov
).
Fixed the behavior when mutations that have nothing to do are stuck (with enabled setting
empty_result_for_aggregation_b... | {"source_file": "2021.md"} | [
0.05140982195734978,
0.013854977674782276,
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-0... |
e7a56332-c3be-49bd-a4a4-1bcbfc0f8980 | FileLog
(experimental feature) engine unnesessary created meta data directory when create table failed. Fix
#31962
.
#31967
(
flynn
).
Some
GET_PART
entry might hang in replication queue if part is lost on all replicas and there are no other parts in the same partition. It's fixed in cases when partition key co... | {"source_file": "2021.md"} | [
0.0030721735674887896,
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0.0... |
e6141cf3-7aa4-4833-aa9a-8935694b4fdd | Disable
partial_merge_join_left_table_buffer_bytes
before bug in this optimization is fixed. See
#31009
). Remove redundant option
partial_merge_join_optimizations
.
#31528
(
Vladimir C
).
Fix progress for short
INSERT SELECT
queries.
#31510
(
Azat Khuzhin
).
Fix wrong behavior with group by and positiona... | {"source_file": "2021.md"} | [
-0.0021768345031887293,
0.004279484506696463,
0.004651643335819244,
0.03672128915786743,
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0.034517381340265274,
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-0.00031373088131658733,
0.023984719067811966,
-0... |
fc59b7d6-c625-4231-8145-d5238995854a | More correct setting up capabilities inside Docker.
#31802
(
Constantine Peresypkin
).
Enable clang
-fstrict-vtable-pointers
,
-fwhole-program-vtables
compile options.
#20151
(
Maksim Kita
).
Avoid downloading toolchain tarballs for cross-compiling for FreeBSD.
#31672
(
alexey-milovidov
).
Initial suppor... | {"source_file": "2021.md"} | [
-0.032925281673669815,
0.019597966223955154,
-0.005758232437074184,
-0.04817231744527817,
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0.04553370177745819,
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-0.08104128390550613,
-0.045570217072963715,
-0... |
c1e4ed12-fa46-496d-bce9-90edde245107 | Added support for executable (scriptable) user defined functions. These are UDFs that can be written in any programming language.
#28803
(
Maksim Kita
).
Allow predefined connections to external data sources. This allows to avoid specifying credentials or addresses while using external data sources, they can be ref... | {"source_file": "2021.md"} | [
-0.029718469828367233,
-0.07633236795663834,
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0.02108021453022957,
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-0.020330945029854774,
0.027417343109846115,
0.03... |
c159a7eb-654a-432f-bff3-8db36ae69420 | HSTS can be enabled for ClickHouse HTTP server by setting
hsts_max_age
in configuration file with a positive number.
#29516
(
εζΆ
).
Huawei OBS Storage support. Closes
#24294
.
#29511
(
kevin wan
).
New function
mapContainsKeyLike
to get the map that key matches a simple regular expression.
#29471
(
εζΆ
).... | {"source_file": "2021.md"} | [
-0.012318771332502365,
0.02132522314786911,
-0.033127572387456894,
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0.0905497670173645,
-0.048... |
a460a2a6-438f-4fda-a9ce-9621ce46ca56 | Performance Improvement {#performance-improvement-1}
Background merges can be preempted by each other and they are scheduled with appropriate priorities. Now long running merges won't prevent short merges to proceed. This is needed for a better scheduling and controlling of merges execution. It reduces the chances ... | {"source_file": "2021.md"} | [
-0.048034701496362686,
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0.021432658657431602,
0.01116879004985094,
-0.... |
efb09f51-268b-4832-aa06-7651c4c1b73d | Improve the performance of SUM aggregate function of Nullable floating point numbers.
#28906
(
RaΓΊl MarΓn
).
Speed up part loading process with multiple disks are in use. The idea is similar to https://github.com/ClickHouse/ClickHouse/pull/16423 . Prod env shows improvement: 24 min -> 16 min .
#28363
(
Amos Bird
... | {"source_file": "2021.md"} | [
-0.07238751649856567,
0.0194503515958786,
-0.03847293183207512,
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0.008331925608217716,
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0.005799017380923033,
-0.... |
9cd86c23-c48b-43fb-8a75-6685a95fc11e | Correctly resolve interdependencies between tables on server startup. Closes
#8004
, closes
#15170
.
#28373
(
tavplubix
).
Avoid error "Division by zero" when denominator is Nullable in functions
divide
,
intDiv
and
modulo
. Closes
#22621
.
#28352
(
Kruglov Pavel
).
Allow to parse values of
Date
data t... | {"source_file": "2021.md"} | [
0.011489931493997574,
-0.021851571276783943,
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0.06995750218629837,
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0.007397015113383532,
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-0.07257486134767532,
0.03665662556886673,
-0.02446... |
00942686-1f95-45a5-9ef5-54e2f58cbd0c | Add ClickHouse logo to Play UI.
#29674
(
alexey-milovidov
).
Better exception message while reading column from Arrow-supported formats like
Arrow
,
ArrowStream
,
Parquet
and
ORC
. This closes
#29926
.
#29927
(
alexey-milovidov
).
Fix data-race between flush and startup in
Buffer
tables. This can appear... | {"source_file": "2021.md"} | [
0.012506689876317978,
-0.07999056577682495,
-0.06900973618030548,
-0.09610521048307419,
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0.02902693673968315,
-0.005277537740767002,
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0.06771126389503479,
0.03860566020011902,
0.03592392057180405,
-0.028432520106434822,
-0.00... |
a38efa90-2093-47f7-af56-48aea1ec41f1 | Added setting
use_skip_indexes
.
#29405
(
Maksim Kita
).
Add support for
FREEZE
ing in-memory parts (for backups).
#29376
(
Mo Xuan
).
Pass through initial query_id for
clickhouse-benchmark
(previously if you run remote query via
clickhouse-benchmark
, queries on shards will not be linked to the initial qu... | {"source_file": "2021.md"} | [
-0.0379834808409214,
0.05071355029940605,
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0.007777824532240629,
0.0025660586543381214,
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0.01853022538125515,
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0.008804465644061565,
0.07385604083538055,
-0.054... |
821430c5-1f06-42d6-93dd-e6b3aa81b0b0 | Forbid cleaning of tmp directories that can be used by an active mutation/merge if mutation/merge is extraordinarily long.
#28760
(
Azat Khuzhin
).
Allow optimization
optimize_arithmetic_operations_in_aggregate_functions = 1
when alias is used.
#28746
(
Amos Bird
).
Implement
detach_not_byte_identical_parts
... | {"source_file": "2021.md"} | [
-0.001464693690650165,
0.002260626060888171,
0.027462568134069443,
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0.008231999352574348,
0.0098... |
282b4151-f7ba-4e79-a7b8-8548f9110817 | Add ability to compile using newer version fo glibc without using new symbols.
#29594
(
Azat Khuzhin
).
Reduce Debug build binary size by clang optimization option.
#28736
(
flynn
).
Now all images for CI will be placed in the separate dockerhub repo.
#28656
(
alesapin
).
Improve support for build with clan... | {"source_file": "2021.md"} | [
-0.025690769776701927,
0.05901111289858818,
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0.04126948490738869,
-0... |
4365d194-c17a-4fe9-872b-7cc5c72acd1a | Limit push down optimization could cause a error
Cannot find column
. Fixes
#30438
.
#30562
(
Nikolai Kochetov
).
Add missing parenthesis for
isNotNull
/
isNull
rewrites to
IS [NOT] NULL
(fixes queries that has something like
isNotNull(1)+isNotNull(2)
).
#30520
(
Azat Khuzhin
).
Fix deadlock on ALTER wit... | {"source_file": "2021.md"} | [
-0.03893895819783211,
-0.010726245120167732,
0.008711814880371094,
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0.036697935312986374,
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-0.07205280661582947,
0.0013524151872843504,
-... |
3252bcd8-61ab-4b15-ad59-d7f06fd5cc2b | Fix data-race between
LogSink::writeMarks()
and
LogSource
in
StorageLog
.
#29946
(
Azat Khuzhin
).
Fix potential resource leak of the concurrent query limit of merge tree tables introduced in https://github.com/ClickHouse/ClickHouse/pull/19544.
#29879
(
Amos Bird
).
Fix system tables recreation check (fail... | {"source_file": "2021.md"} | [
0.025806015357375145,
-0.017647504806518555,
-0.020410766825079918,
0.03815219923853874,
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0.1125413030385971,
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0.027529578655958176,
0.053249794989824295,
0.00588... |
cbaa4a4a-4510-40b9-830a-c87309a0e281 | Fix Logical error
Cannot capture columns
in functions greatest/least. Closes
#29334
.
#29454
(
Kruglov Pavel
).
RocksDB table engine: fix race condition during multiple DB opening (and get back some tests that triggers the problem on CI).
#29393
(
Azat Khuzhin
).
Fix replicated access storage not shutting do... | {"source_file": "2021.md"} | [
0.01935974694788456,
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0.0... |
0f15976e-de29-4a0c-97b1-615dd4a4720b | Fixed a race condition between
DROP PART
and
REPLACE/MOVE PARTITION
that might cause replicas to diverge in rare cases.
#28864
(
tavplubix
).
Fix expressions compilation with short circuit evaluation.
#28821
(
Azat Khuzhin
).
Fix extremely rare case when ReplicatedMergeTree replicas can diverge after hard r... | {"source_file": "2021.md"} | [
-0.012498578988015652,
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0.08171837776899338,
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0.053409986197948456,
0.... |
cd5f243b-59c6-4860-a915-7ee39935b296 | Support
lz4
compression format (in addition to
gz
,
bz2
,
xz
,
zstd
) for data import / export.
#25310
(
Bharat Nallan
).
Allow positional arguments under setting
enable_positional_arguments
. Closes
#2592
.
#27530
(
Kseniia Sumarokova
).
Accept user settings related to file formats in
SETTINGS
clause... | {"source_file": "2021.md"} | [
0.048850346356630325,
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0.01... |
e4930d73-6b68-4624-966e-4e6fd20a1b60 | Improvement {#improvement-2}
Check cluster name before creating
Distributed
table, do not allow to create a table with incorrect cluster name. Fixes
#27832
.
#27927
(
tavplubix
).
Add aggregate function
quantileBFloat16Weighted
similarly to other quantile...Weighted functions. This closes
#27745
.
#27758... | {"source_file": "2021.md"} | [
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0.07221043854951859,
-0.06... |
4e2d1ee0-07ed-427a-a90c-43ff2b3227dd | Added
replication_wait_for_inactive_replica_timeout
setting. It allows to specify how long to wait for inactive replicas to execute
ALTER
/
OPTIMZE
/
TRUNCATE
query (default is 120 seconds). If
replication_alter_partitions_sync
is 2 and some replicas are not active for more than
replication_wait_for_inactive_rep... | {"source_file": "2021.md"} | [
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-0.... |
91e287a2-7b36-4a65-ba39-b9127a8a3d36 | Fixed possible ZooKeeper watches leak (minor issue) on background processing of distributed DDL queue. Closes
#26036
.
#28446
(
tavplubix
).
Fix missing quoting of table names in
MaterializedPostgreSQL
engine. Closes
#28316
.
#28433
(
Kseniia Sumarokova
).
Fix the wrong behaviour of non joined rows from nul... | {"source_file": "2021.md"} | [
-0.015327702276408672,
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... |
eef3bcee-543d-42cf-b866-336278d661fa | ClickHouse release v21.9, 2021-09-09 {#clickhouse-release-v219-2021-09-09}
Backward Incompatible Change {#backward-incompatible-change-3}
Do not output trailing zeros in text representation of
Decimal
types. Example:
1.23
will be printed instead of
1.230000
for decimal with scale 6. This closes
#15794
. It... | {"source_file": "2021.md"} | [
-0.05392651632428169,
-0.010366011410951614,
-0.016994651407003403,
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0.... |
4e154016-1934-4592-931e-7a5bf771f05e | Introduce syntax for here documents. Example
SELECT $doc$ VALUE $doc$
.
#26671
(
Maksim Kita
). This change is backward incompatible if in query there are identifiers that contain
$
#28768
.
Now indices can handle Nullable types, including
isNull
and
isNotNull
.
#12433
and
#12455
(
Amos Bird
) and
#2725... | {"source_file": "2021.md"} | [
-0.018340954557061195,
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0.0012236650800332427,
0.026478897780179977,
-0.0890198... |
e0559e77-d60d-420f-9cff-af2352eb8200 | Allow using constant expressions from with and select in aggregate function parameters. Close
#10945
.
#27531
(
abel-cheng
).
Add
tupleToNameValuePairs
, a function that turns a named tuple into an array of pairs.
#27505
(
Braulio Valdivielso MartΓnez
).
Add support for
bzip2
compression method for import/e... | {"source_file": "2021.md"} | [
0.022305579856038094,
-0.029122373089194298,
-0.0924229547381401,
0.03865865617990494,
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0.09419598430395126,
-0.0654... |
dc608630-c993-4d3b-8202-945df5e1f22b | Specialize date time related comparison to achieve better performance. This fixes
#27083
.
#27122
(
Amos Bird
).
Share file descriptors in concurrent reads of the same files. There is no noticeable performance difference on Linux. But the number of opened files will be significantly (10..100 times) lower on typic... | {"source_file": "2021.md"} | [
0.00822509080171585,
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0.011139150708913803,
-0.057806164026260376,
0.0036985885817557573,
-0.07184828072786331,
-... |
2c6b12e3-4141-43d3-9276-2028a3f51e6a | Add setting
log_formatted_queries
to log additional formatted query into
system.query_log
. It's useful for normalized query analysis because functions like
normalizeQuery
and
normalizeQueryKeepNames
don't parse/format queries in order to achieve better performance.
#27380
(
Amos Bird
).
Add two settings
ma... | {"source_file": "2021.md"} | [
0.07427357137203217,
-0.01309831254184246,
-0.05691472813487053,
0.0361267551779747,
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0.04513789713382721,
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0.03830655291676521,
0.017839014530181885,
-0.05341... |
39fb18a2-b2c3-4b1f-9ed2-2a02e520aa5d | SET PROFILE
now applies constraints too if they're set for a passed profile.
#26730
(
Vitaly Baranov
).
Improve handling of
KILL QUERY
requests.
#26675
(
RaΓΊl MarΓn
).
mapPopulatesSeries
function supports
Map
type.
#26663
(
Ildus Kurbangaliev
).
Fix excessive (x2) connect attempts with
skip_unavailab... | {"source_file": "2021.md"} | [
0.02406245470046997,
-0.025757405906915665,
-0.07953430712223053,
-0.02860059216618538,
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-0.06254909187555313,
-0.04793229326605797,
-0.004200261551886797,
-0.05827547609806061,
0.04463830962777138,
-0.03703665733337402,
-0.06908538192510605,
0.022446628659963608,
-0.0... |
4dfe2100-fe65-4525-976e-cdb4370229c1 | Added
output_format_avro_string_column_pattern
setting to put specified String columns to Avro as string instead of default bytes. Implements
#22414
.
#26245
(
Ilya Golshtein
).
Add information about column sizes in
system.columns
table for
Log
and
TinyLog
tables. This closes
#9001
.
#26241
(
Nikolay De... | {"source_file": "2021.md"} | [
0.09511278569698334,
0.03176469728350639,
-0.04627883806824684,
0.023318318650126457,
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0.03114001639187336,
0.09209498018026352,
-0.013668631203472614,
0.05963224917650223,
0.0082973288372159,
-0.0022345446050167084,
-0.055508047342300415,
-0.03214... |
1c92b2d9-b6e4-4049-bab4-2bc9ad6ae632 | Do connection draining asynchonously upon finishing executing distributed queries. A new server setting is added
max_threads_for_connection_collector
which specifies the number of workers to recycle connections in background. If the pool is full, connection will be drained synchronously but a bit different than befor... | {"source_file": "2021.md"} | [
0.019463999196887016,
0.048713333904743195,
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0.08055424690246582,
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0.042933352291584015,
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0.055569037795066833,
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-0.0041140057146549225,
0.030472490936517715,
... |
e584ea56-ce06-446d-a685-061102c8bfcf | fix metric
BackgroundMessageBrokerSchedulePoolTask
, maybe mistyped.
#27452
(
Ben
).
Fix distributed queries with zero shards and aggregation.
#27427
(
Azat Khuzhin
).
Compatibility when
/proc/meminfo
does not contain KB suffix.
#27361
(
Mike Kot
).
Fix incorrect result for query with row-level security,... | {"source_file": "2021.md"} | [
-0.002353825606405735,
-0.03168749064207077,
-0.01691950298845768,
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0.03127623349428177,
0.03135087713599205,
-0.0748644769191742,
0.06940444558858871,
-0.002... |
6fb19118-6b45-43d5-bb85-8c06ff8c50e8 | Fix error
Missing columns: 'xxx'
when
DEFAULT
column references other non materialized column without
DEFAULT
expression. Fixes
#26591
.
#26900
(
alesapin
).
Fix loading of dictionary keys in
library-bridge
for
library
dictionary source.
#26834
(
Kseniia Sumarokova
).
Aggregate function parameters mi... | {"source_file": "2021.md"} | [
0.010873026214540005,
-0.004272486083209515,
-0.035462308675050735,
0.009995246306061745,
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-0.0559491403400898,
0.024346662685275078,
0.0033411446493119,
0.05996207147836685,
0.05331045016646385,
-0.03763904795050621,
0.0037527792155742645,
-0.05... |
e7245b2f-74b9-4196-afca-344eb27bf8a4 | Fix logical error on join with totals, close
#26017
.
#26250
(
Vladimir C
).
Remove excessive newline in
thread_name
column in
system.stack_trace
table. This fixes
#24124
.
#26210
(
alexey-milovidov
).
Fix potential crash if more than one
untuple
expression is used.
#26179
(
alexey-milovidov
).
Don'... | {"source_file": "2021.md"} | [
-0.02255190908908844,
-0.04727182164788246,
0.0086599662899971,
-0.0390438437461853,
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-0.0431550107896328,
0.060273949056863785,
-0.020653771236538887,
-0.036501336842775345,
0.049439508467912674,
0.04714798927307129,
-0.03559480607509613,
0.09525363147258759,
-0.0583... |
f6080d5c-a0a2-492c-849b-14ce8dfcbc52 | Update RocksDB to
2021-07-16
master.
#26411
(
alexey-milovidov
).
ClickHouse release v21.8, 2021-08-12 {#clickhouse-release-v218-2021-08-12}
Upgrade Notes {#upgrade-notes}
New version is using
Map
data type for system logs tables (
system.query_log
,
system.query_thread_log
,
system.processes
,
syste... | {"source_file": "2021.md"} | [
0.04729169234633446,
-0.018747540190815926,
0.018197687342762947,
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-0.0918085053563118,
-0.06174303591251373,
0.00036645520594902337,
-0.11564336717128754,
0.07991746813058853,
0.03059871308505535,
-0.0010752277448773384,
0.027820540592074394,
0... |
5741e323-ddb6-4a09-9531-c3e0c744f3a1 | Improve latency of short queries that require reading from tables with many columns.
#26371
(
Anton Popov
).
Improvements {#improvements}
Use
Map
data type for system logs tables (
system.query_log
,
system.query_thread_log
,
system.processes
,
system.opentelemetry_span_log
). These tables will be auto-c... | {"source_file": "2021.md"} | [
0.04086780920624733,
0.04904228821396828,
-0.051977578550577164,
0.0014735986478626728,
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0.08302470296621323,
0.01779031567275524,
-0.053564466536045074,
0.06511544436216354,
0.04863738268613815,
-0.031704410910606384,
0.08338285982608795,
-0.059... |
dd8436ef-456b-4b3f-b979-73c1aab90c16 | Convert history file from
readline
format to
replxx
format.
#25888
(
Azat Khuzhin
).
Fix an issue which can lead to intersecting parts after
DROP PART
or background deletion of an empty part.
#25884
(
alesapin
).
Better handling of lost parts for
ReplicatedMergeTree
tables. Fixes rare inconsistencies in... | {"source_file": "2021.md"} | [
-0.054464153945446014,
-0.07238420844078064,
-0.032234422862529755,
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0.0027544498443603516,
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0.017889225855469704,
0.039893437176942825,
0.06413683295249939,
0.01753084920346737,
0.10758129507303238,
-0.0... |
5f0852b2-f275-48a5-9fa7-4246945ee78d | Fix infinite non-joined block stream in
partial_merge_join
close
#26325
.
#26374
(
Vladimir C
).
Fix possible crash when login as dropped user. Fix
#26073
.
#26363
(
Vitaly Baranov
).
Fix
optimize_distributed_group_by_sharding_key
for multiple columns (leads to incorrect result w/
optimize_skip_unused_sh... | {"source_file": "2021.md"} | [
-0.02086718939244747,
0.019199151545763016,
0.012551534920930862,
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0.006766149308532476,
0.002728447550907731,
0.023171011358499527,
0.0... |
90725852-40d9-4136-9daa-caa54cafa556 | Fix ARM exception handling with non default page size. Fixes
#25512
,
#25044
,
#24901
,
#23183
,
#20221
,
#19703
,
#19028
,
#18391
,
#18121
,
#17994
,
#12483
.
#25854
(
Maksim Kita
).
Fix sharding_key from column w/o function for
remote()
(before
select * from remote('127.1', system.one, dummy)
leads... | {"source_file": "2021.md"} | [
0.00837023090571165,
0.021479902788996696,
0.024702034890651703,
0.03294214978814125,
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-0.04764997586607933,
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0.09673743695020676,
0.03952416405081749,
-0.04857254773378372,
0.08581254631280899,
-0.04... |
26cfd5ce-16b4-4b04-829d-62caf94aa5e1 | Support structs and maps in Arrow/Parquet/ORC and dictionaries in Arrow input/output formats. Present new setting
output_format_arrow_low_cardinality_as_dictionary
.
#24341
(
Kruglov Pavel
).
Added support for
Array
type in dictionaries.
#25119
(
Maksim Kita
).
Added function
bitPositionsToArray
. Closes
#... | {"source_file": "2021.md"} | [
0.047649845480918884,
0.031226949766278267,
-0.01810157112777233,
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-0.03257623687386513,
-0.01799592934548855,
0.008648160845041275,
-0.02989611029624939,
... |
b2567c79-ab27-4963-bc69-96cbc601a20d | Improvement {#improvement-4}
Allow to limit bandwidth for replication. Add two Replicated*MergeTree settings:
max_replicated_fetches_network_bandwidth
and
max_replicated_sends_network_bandwidth
which allows to limit maximum speed of replicated fetches/sends for table. Add two server-wide settings (in
default
... | {"source_file": "2021.md"} | [
0.0030362627003341913,
-0.06030534580349922,
-0.06811602413654327,
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-0.022537847980856895,
0.010602366179227829,
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0.07124099880456924,
-0.06363199651241302,
0.03359512239694595,
0.05578605830669403,
-0.07... |
3e49c7fd-e4c8-4024-bf15-ad53f15b5913 | Added support
Interval
type for
LowCardinality
. It is needed for intermediate values of some expressions. Closes
#21730
.
#25410
(
Vladimir
).
Add
==
operator on time conditions for
sequenceMatch
and
sequenceCount
functions. For eg: sequenceMatch('(?1)(?t==1)(?2)')(time, data = 1, data = 2).
#25299
(
C... | {"source_file": "2021.md"} | [
-0.019517721608281136,
-0.01229509711265564,
-0.06179598718881607,
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-0.03667718917131424,
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0.05641988292336464,
0.02479424513876438,
0.0012078648433089256,
-0.02752291038632393,
-0.012978563085198402,
0.01886848732829094,
-... |
3740e339-cef5-47c3-8728-ad292e122c4d | Handle column name clashes for
Join
table engine. Closes
#20309
.
#23769
(
Vladimir
).
Display progress for
File
table engine in
clickhouse-local
and on INSERT query in
clickhouse-client
when data is passed to stdin. Closes
#18209
.
#23656
(
Kseniia Sumarokova
).
Bugfixes and improvements of
clickhou... | {"source_file": "2021.md"} | [
-0.05891845375299454,
-0.025169670581817627,
-0.08787062764167786,
0.03915200009942055,
-0.04085196182131767,
-0.038986921310424805,
-0.01509881392121315,
0.004516168497502804,
-0.03786768764257431,
0.034928079694509506,
0.03263245150446892,
-0.0009439178393222392,
0.00008850026642903686,
... |
01729329-0f9e-4ee4-a724-fca429f48e3f | A feature for MySQL compatibility protocol: make
user
function to return correct output. Closes
#25697
.
#25697
(
sundyli
).
Bug Fix {#bug-fix-3}
Improvement for backward compatibility. Use old modulo function version when used in partition key. Closes
#23508
.
#24157
(
Kseniia Sumarokova
).
Fix extre... | {"source_file": "2021.md"} | [
-0.009525603614747524,
-0.03622552007436752,
0.022236427292227745,
-0.016069533303380013,
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-0.02327633462846279,
0.04675488919019699,
0.009131243452429771,
0.039947882294654846,
-0.006036085542291403,
0.045356132090091705,
0.07478886097669601,
0.0... |
f13ac5d3-0f11-472c-88d4-0e62d72a891e | Fixed a bug in
Replicated
database engine that might rarely cause some replica to skip enqueued DDL query.
#24805
(
tavplubix
).
Fix null pointer dereference in
EXPLAIN AST
without query.
#25631
(
Nikolai Kochetov
).
Fix waiting of automatic dropping of empty parts. It could lead to full filling of backgrou... | {"source_file": "2021.md"} | [
-0.10814899206161499,
-0.08539662510156631,
0.005002270452678204,
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0.005419883411377668,
0.0628325343132019,
0.014502852223813534,
0.07171116024255753,
-0.087568... |
5625b1f8-0d82-41df-9175-787518f36cd2 | Remove possibility to create tables with columns referencing themselves like
a UInt32 ALIAS a + 1
or
b UInt32 MATERIALIZED b
. Fixes
#24910
,
#24292
.
#25059
(
alesapin
).
Fix wrong result when using aggregate projection with
not empty
GROUP BY
key to execute query with
GROUP BY
by
empty
key.
#25055
... | {"source_file": "2021.md"} | [
0.016708804294466972,
-0.03881002217531204,
-0.12092992663383484,
-0.0006746386061422527,
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0.02499217540025711,
0.016836820170283318,
0.08106132596731186,
0.023969464004039764,
-0.039121996611356735,
0.024511151015758514,
-0.0... |
6669033f-0741-4792-8888-e09f9ce43da9 | Allow empty HTTP headers. Fixes
#23901
.
#24285
(
Ivan
).
Correct processing of mutations (ALTER UPDATE/DELETE) in Memory tables. Closes
#24274
.
#24275
(
flynn
).
Make column LowCardinality property in JOIN output the same as in the input, close
#23351
, close
#20315
.
#24061
(
Vladimir
).
A fix for Ka... | {"source_file": "2021.md"} | [
-0.03089604154229164,
-0.003100138623267412,
-0.10240305960178375,
0.023507695645093918,
0.014868827536702156,
-0.10638464987277985,
-0.06080639734864235,
0.03703133389353752,
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0.030655890703201294,
-0.0012991372495889664,
-0.12289216369390488,
-0.020654359832406044,
-... |
6321c886-1782-4202-a549-073219126a0a | New Feature {#new-feature-5}
Add Postgres-like cast operator (
::
). E.g.:
[1, 2]::Array(UInt8)
,
0.1::Decimal(4, 4)
,
number::UInt16
.
#23871
(
Anton Popov
).
Make big integers production ready. Add support for
UInt128
data type. Fix known issues with the
Decimal256
data type. Support big integers in di... | {"source_file": "2021.md"} | [
-0.00925331749022007,
0.06350206583738327,
-0.02490074373781681,
-0.022990234196186066,
-0.038860250264406204,
-0.07376745343208313,
0.019275717437267303,
0.00832271296530962,
-0.11984877288341522,
-0.011394268833100796,
-0.03994312509894371,
-0.028313394635915756,
-0.0035036085173487663,
... |
8f57c38c-41b6-45e2-ba63-b140fc719450 | LDAP: implemented user DN detection functionality to use when mapping Active Directory groups to ClickHouse roles.
#22228
(
Denis Glazachev
).
New aggregate function
deltaSumTimestamp
for summing the difference between consecutive rows while maintaining ordering during merge by storing timestamps.
#21888
(
Russ... | {"source_file": "2021.md"} | [
-0.03789455071091652,
-0.06784691661596298,
-0.0005586018087342381,
-0.052512526512145996,
0.002306208247318864,
-0.050893768668174744,
0.0083474051207304,
-0.03728614002466202,
-0.027418142184615135,
0.024704566225409508,
0.0006711493479087949,
-0.011159510351717472,
0.017773566767573357,
... |
11dfee73-b54f-448b-aa97-0575d4503f7b | Added
region
parameter for S3 storage and disk.
#23846
(
Vladimir Chebotarev
).
Allow configuring different log levels for different logging channels. Closes
#19569
.
#23857
(
filimonov
).
Keep default timezone on
DateTime
operations if it was not provided explicitly. For example, if you add one second to ... | {"source_file": "2021.md"} | [
0.008499415591359138,
-0.0808567926287651,
-0.05851994827389717,
0.002753519220277667,
-0.02840096317231655,
-0.031674109399318695,
0.013042245991528034,
0.0027939309366047382,
0.06569906324148178,
0.059828951954841614,
0.026068998500704765,
-0.03389064222574234,
0.08565569669008255,
0.064... |
7fc2df03-5415-4bec-8558-1f39e0d20a04 | Add hints for names of
Enum
elements (suggest names in case of typos). Closes
#17112
.
#23919
(
flynn
).
Measure found rate (the percentage for which the value was found) for dictionaries (see
found_rate
in
system.dictionaries
).
#23916
(
Azat Khuzhin
).
Allow to add specific queue settings via table sett... | {"source_file": "2021.md"} | [
0.052707914263010025,
-0.06500497460365295,
-0.04274697229266167,
0.07162120193243027,
-0.10736837983131409,
-0.050320107489824295,
0.1200844794511795,
-0.011427643708884716,
-0.05850493535399437,
0.13648930191993713,
0.03531442955136299,
-0.05953723564743996,
0.04849540442228317,
-0.03863... |
79ac56f1-e415-405d-948d-a4a34dfe4d10 | Fix usage of tuples in
CREATE .. AS SELECT
queries.
#24464
(
Anton Popov
).
Support for
Parquet
format in
Kafka
tables.
#23412
(
Chao Ma
).
Bug Fix {#bug-fix-4}
Use old modulo function version when used in partition key and primary key. Closes
#23508
.
#24157
(
Kseniia Sumarokova
). It was a sour... | {"source_file": "2021.md"} | [
-0.08753623813390732,
-0.03246498852968216,
0.008769476786255836,
-0.01932249218225479,
-0.014121240936219692,
-0.08813723176717758,
-0.02649552933871746,
-0.009154378436505795,
0.0458918958902359,
0.06242036446928978,
0.03642040118575096,
0.007578563876450062,
-0.03304455056786537,
-0.075... |
821e88c0-8041-40b5-8df5-3625a246e24f | Fix keys metrics accounting for
CACHE
dictionary with duplicates in the source (leads to
DictCacheKeysRequestedMiss
overflows).
#23929
(
Azat Khuzhin
).
Fix implementation of connection pool of
PostgreSQL
engine. Closes
#23897
.
#23909
(
Kseniia Sumarokova
).
Fix
distributed_group_by_no_merge = 2
with ... | {"source_file": "2021.md"} | [
-0.054992347955703735,
-0.031480543315410614,
-0.024183737114071846,
0.01855752058327198,
-0.08997505158185959,
-0.09697125852108002,
-0.004415949806571007,
-0.0715668722987175,
0.021255861967802048,
0.0279881302267313,
0.0456087701022625,
0.03223288059234619,
0.008090350776910782,
-0.0808... |
2996e37b-1df1-4b7d-9bfa-ccef07117c8b | Avoid possible build dependency on locale and filesystem order. This allows reproducible builds.
#23600
(
alexey-milovidov
).
Remove a source of nondeterminism from build. Now builds at different point of time will produce byte-identical binaries. Partially addressed
#22113
.
#23559
(
alexey-milovidov
).
Add s... | {"source_file": "2021.md"} | [
-0.03982072323560715,
0.010864765383303165,
-0.02093874104321003,
-0.0401143878698349,
0.022747455164790154,
-0.13277432322502136,
-0.04353475198149681,
0.007286830805242062,
-0.0033482774160802364,
0.007848582230508327,
-0.02620684541761875,
-0.08234798908233643,
-0.03619701415300369,
0.0... |
f60a9e5e-4733-4dde-ba79-47af4d2ec535 | Added
ALTER TABLE ... FETCH PART ...
query. It's similar to
FETCH PARTITION
, but fetches only one part.
#22706
(
turbo jason
).
Added a setting
max_distributed_depth
that limits the depth of recursive queries to
Distributed
tables. Closes
#20229
.
#21942
(
flynn
).
Performance Improvement {#performan... | {"source_file": "2021.md"} | [
-0.0243107620626688,
-0.01600981317460537,
-0.0212786253541708,
0.031197702512145042,
-0.01430493127554655,
-0.09522068500518799,
-0.07102514058351517,
0.043302297592163086,
0.006844067480415106,
0.012172924354672432,
-0.057363756000995636,
0.05736424773931503,
0.013330139219760895,
-0.061... |
0cbdc0ab-5cf6-4d4b-8527-4bb1db106c7d | Enabled
async_socket_for_remote
by default (using less amount of OS threads for distributed queries).
#23683
(
Nikolai Kochetov
).
Fixed
quantile(s)TDigest
. Added special handling of singleton centroids according to tdunning/t-digest 3.2+. Also a bug with over-compression of centroids in implementation of earli... | {"source_file": "2021.md"} | [
-0.02981238067150116,
-0.027957815676927567,
-0.05637180060148239,
-0.012038609944283962,
-0.09284680336713791,
-0.04413381963968277,
0.01495998352766037,
-0.03736945241689682,
0.02846500836312771,
0.029009651392698288,
-0.03588903322815895,
0.024147814139723778,
0.11682453006505966,
-0.02... |
3be457e4-9c19-4a70-8898-b920d80c9925 | Clear the rest of the screen and show cursor in
clickhouse-client
if previous program has left garbage in terminal. This closes
#16518
.
#22634
(
alexey-milovidov
).
Make
round
function to behave consistently on non-x86_64 platforms. Rounding half to nearest even (Banker's rounding) is used.
#22582
(
alexey-... | {"source_file": "2021.md"} | [
-0.01551881805062294,
-0.01439519040286541,
-0.10445536673069,
-0.015268472023308277,
-0.007679633796215057,
-0.07028656452894211,
-0.06368081271648407,
0.002177979564294219,
0.023544298484921455,
0.04477613419294357,
-0.00713721988722682,
-0.06889335811138153,
-0.01011661347001791,
-0.084... |
d653d518-5e58-4ab2-901d-d33492c44401 | Fixed remote JDBC bridge timeout connection issue. Closes
#9609
.
#23771
(
Maksim Kita
,
alexey-milovidov
).
Fix the logic of initial load of
complex_key_hashed
if
update_field
is specified. Closes
#23800
.
#23824
(
Maksim Kita
).
Fixed crash when
PREWHERE
and row policy filter are both in effect with ... | {"source_file": "2021.md"} | [
-0.04706934094429016,
0.008578352630138397,
-0.010413049720227718,
-0.01954525336623192,
-0.06288238614797592,
-0.01434564869850874,
-0.05287798121571541,
-0.005476104095578194,
0.02095184288918972,
0.09333658218383789,
-0.034221116453409195,
-0.0360565148293972,
0.027396412566304207,
-0.0... |
7d1dd2fd-f1bb-464e-8853-3e3f743eca3b | Fixed simple key dictionary from DDL creation if primary key is not first attribute. Fixes
#23236
.
#23262
(
Maksim Kita
).
Fixed reading from ODBC when there are many long column names in a table. Closes
#8853
.
#23215
(
Kseniia Sumarokova
).
MaterializeMySQL (experimental feature): fixed
Not found column
... | {"source_file": "2021.md"} | [
-0.022364726290106773,
-0.0461990050971508,
-0.012926421128213406,
0.05891847237944603,
-0.03780505433678627,
-0.06997697800397873,
0.0063720284961164,
-0.0024958245921880007,
-0.06694039702415466,
0.0717463418841362,
0.07063097506761551,
-0.039992742240428925,
0.07372257858514786,
-0.0590... |
eb598748-66c3-421e-b6d3-593e46722e0c | Fixed wrong cast of a column of
LowCardinality
type in Merge Join algorithm. Close
#22386
, close
#22388
.
#22510
(
Vladimir
).
Buffer overflow (on read) was possible in
tokenbf_v1
full text index. The excessive bytes are not used but the read operation may lead to crash in rare cases. This closes
#19233
.
... | {"source_file": "2021.md"} | [
0.0006757535156793892,
-0.02415628544986248,
0.02205606922507286,
0.010044300928711891,
-0.034994449466466904,
-0.056685253977775574,
-0.00019518911722116172,
0.0800863578915596,
-0.03303113207221031,
0.013253102079033852,
-0.0039757066406309605,
0.03532762452960014,
-0.03251621499657631,
... |
aa29547c-fc52-471c-94a8-80d6d799bb58 | ClickHouse release 21.4 {#clickhouse-release-214}
ClickHouse release 21.4.1 2021-04-12 {#clickhouse-release-2141-2021-04-12}
Backward Incompatible Change {#backward-incompatible-change-7}
The
toStartOfIntervalFunction
will align hour intervals to the midnight (in previous versions they were aligned to the sta... | {"source_file": "2021.md"} | [
-0.06496044993400574,
-0.020783454179763794,
-0.003513988107442856,
-0.038541585206985474,
-0.051100973039865494,
-0.012449747882783413,
-0.056607894599437714,
-0.008304579183459282,
-0.09882614016532898,
0.06380651146173477,
0.043960366398096085,
0.015124600380659103,
-0.0322766937315464,
... |
0daee0d7-1430-4556-9759-e86009207544 | Added support of Kerberos authentication for preconfigured users and HTTP requests (GSS-SPNEGO).
#14995
(
Denis Glazachev
).
Add
prefer_column_name_to_alias
setting to use original column names instead of aliases. it is needed to be more compatible with common databases' aliasing rules. This is for
#9715
and
#... | {"source_file": "2021.md"} | [
-0.06672602146863937,
0.008714590221643448,
-0.106622613966465,
-0.054358381778001785,
-0.0716700628399849,
-0.1040630117058754,
0.028381403535604477,
0.03038192167878151,
-0.003851557383313775,
0.06021105498075485,
0.0400054007768631,
-0.06768976151943207,
0.04572521522641182,
-0.03140811... |
c19b2a10-b4e6-4ecb-bca4-2a94a7307747 | Add
_partition_id
virtual column for
MergeTree*
engines. Allow to prune partitions by
_partition_id
. Add
partitionID()
function to calculate partition id string.
#21401
(
Amos Bird
).
Add function
isIPAddressInRange
to test if an IPv4 or IPv6 address is contained in a given CIDR network prefix.
#21329
(... | {"source_file": "2021.md"} | [
-0.016639957204461098,
-0.028063517063856125,
-0.0336761549115181,
0.0005710229743272066,
0.019744662567973137,
-0.0035308522637933493,
-0.02288483828306198,
0.012120481580495834,
-0.020869549363851547,
-0.029071684926748276,
0.051463231444358826,
0.008733008988201618,
-0.04772887006402016,
... |
00c6a56f-3a05-44ba-8b2b-a377ade3a5bd | Optimize performance of queries like
SELECT ... FINAL ... WHERE
. Now in queries with
FINAL
it's allowed to move to
PREWHERE
columns, which are in sorting key.
#21830
(
foolchi
).
Improved performance by replacing
memcpy
to another implementation. This closes
#18583
.
#21520
(
alexey-milovidov
).
Improv... | {"source_file": "2021.md"} | [
0.007561545353382826,
-0.0028629889711737633,
0.011942763812839985,
-0.028354940935969353,
-0.0756935104727745,
-0.05541020259261131,
-0.007771006319671869,
0.05454515665769577,
0.007682962343096733,
0.0773414671421051,
0.005606069695204496,
0.12268227338790894,
-0.025540975853800774,
-0.0... |
338c7d9e-4cb0-45bd-bac9-d8c3a80786c3 | Add option
strict_increase
to
windowFunnel
function to calculate each event once (resolve
#21835
).
#22025
(
Vladimir
).
If partition key of a
MergeTree
table does not include
Date
or
DateTime
columns but includes exactly one
DateTime64
column, expose its values in the
min_time
and
max_time
columns... | {"source_file": "2021.md"} | [
0.04070845618844032,
-0.068192258477211,
0.0044895377941429615,
0.032665278762578964,
-0.015164073556661606,
-0.07081359624862671,
-0.07603806257247925,
0.055158745497465134,
-0.03422810509800911,
-0.011357259005308151,
0.04977269843220711,
-0.017735878005623817,
0.012330444529652596,
-0.0... |
2604aa0e-1788-45bc-9da2-12739893330a | Do not create empty parts on INSERT when
optimize_on_insert
setting enabled. Fixes
#20304
.
#20387
(
Kruglov Pavel
).
MaterializeMySQL
: add minmax skipping index for
_version
column.
#20382
(
Stig Bakken
).
Add option
--backslash
for
clickhouse-format
, which can add a backslash at the end of each line... | {"source_file": "2021.md"} | [
0.00930514931678772,
-0.023482143878936768,
0.022942259907722473,
0.04171363264322281,
-0.028539251536130905,
-0.02838224731385708,
0.00211476837284863,
0.008341953158378601,
-0.08961395174264908,
0.06609673798084259,
0.053110674023628235,
-0.02801731787621975,
0.06497686356306076,
-0.0693... |
77920d6d-6864-4d8f-ab9a-76b5eb2f1ba3 | Fix reading the HTTP POST request with "multipart/form-data" content type in some cases.
#21936
(
Ivan
).
Fix wrong
ORDER BY
results when a query contains window functions, and optimization for reading in primary key order is applied. Fixes
#21828
.
#21915
(
Alexander Kuzmenkov
).
Fix deadlock in first catbo... | {"source_file": "2021.md"} | [
-0.07106442004442215,
-0.024333812296390533,
0.044388849288225174,
0.03422713279724121,
-0.07628912478685379,
-0.04323645681142807,
-0.0825144574046135,
0.0013369225198403,
-0.008963252417743206,
0.04549597203731537,
-0.022478630766272545,
0.014429784379899502,
-0.00580701744183898,
-0.085... |
0dea6552-04e4-4154-9c97-645db1e6dfe1 | Fix table function
clusterAllReplicas
returns wrong
_shard_num
. close
#21481
.
#21498
(
flynn
).
Fix that S3 table holds old credentials after config update.
#21457
(
Grigory Pervakov
).
Fixed race on SSL object inside
SecureSocket
in Poco.
#21456
(
Nikita Mikhaylov
).
Fix
Avro
format parsing for
... | {"source_file": "2021.md"} | [
-0.04147229716181755,
-0.07107339054346085,
-0.06252612918615341,
0.015194234438240528,
-0.00015932197857182473,
-0.016954872757196426,
-0.038986239582300186,
-0.04347950220108032,
-0.008342570625245571,
0.04461260885000229,
0.03227628394961357,
-0.06252523511648178,
0.03405529633164406,
-... |
ae5b04a7-ddad-4c9c-8fea-91e29dc9de30 | Add
ctime
option to
zookeeper-dump-tree
. It allows to dump node creation time.
#21842
(
Ilya
).
ClickHouse release 21.3 (LTS) {#clickhouse-release-213-lts}
ClickHouse release v21.3, 2021-03-12 {#clickhouse-release-v213-2021-03-12}
Backward Incompatible Change {#backward-incompatible-change-8}
Now it's... | {"source_file": "2021.md"} | [
0.01914634183049202,
-0.027438441291451454,
0.052373483777046204,
-0.031088273972272873,
-0.037396110594272614,
-0.054144237190485,
-0.04231635481119156,
0.044097304344177246,
-0.026176074519753456,
0.08637431263923645,
0.011922062374651432,
-0.022174756973981857,
-0.00954562146216631,
0.0... |
148ce6bd-5074-459d-9c0f-389cd18fca26 | Added
file
function to read file from user_files directory as a String. This is different from the
file
table function. This implements
#issue:18851
.
#19204
(
keenwolf
).
Experimental feature {#experimental-feature-7}
Add experimental
Replicated
database engine. It replicates DDL queries across multip... | {"source_file": "2021.md"} | [
-0.06436183303594589,
-0.07378163933753967,
-0.06335136294364929,
-0.0024947719648480415,
-0.041987646371126175,
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-0.013006269000470638,
0.04639454558491707,
-0.05847049504518509,
0.044852640479803085,
-0.0052971127443015575,
0.11668822914361954,
0.024850856512784958,
... |
d7f781d0-7d46-495d-96b9-8a1458ec2b66 | Slightly better code in aggregation.
#20978
(
alexey-milovidov
).
Add back
intDiv
/
modulo
specializations for better performance. This fixes
#21293
. The regression was introduced in https://github.com/ClickHouse/ClickHouse/pull/18145 .
#21307
(
Amos Bird
).
Do not squash blocks too much on INSERT SELECT i... | {"source_file": "2021.md"} | [
-0.045524366199970245,
-0.028525197878479958,
0.05199619010090828,
0.05900279060006142,
-0.004530181176960468,
-0.11745363473892212,
-0.0210455022752285,
0.04108213260769844,
-0.011340148746967316,
-0.007097604684531689,
-0.00016326858894899487,
-0.0014083872083574533,
-0.01607566885650158,
... |
a37d2403-cb8b-4a3d-9659-46e11e0a655c | Fixed race between execution of distributed DDL tasks and cleanup of DDL queue. Now DDL task cannot be removed from ZooKeeper if there are active workers. Fixes
#20016
.
#20448
(
tavplubix
).
Make FQDN and other DNS related functions work correctly in alpine images.
#20336
(
filimonov
).
Do not allow early con... | {"source_file": "2021.md"} | [
-0.04196050763130188,
0.03462604805827141,
0.018238013610243797,
-0.01730252616107464,
-0.01828552968800068,
-0.09771894663572311,
-0.018382109701633453,
-0.08559759706258774,
-0.007884305901825428,
0.04438686743378639,
-0.10284174233675003,
-0.037354860454797745,
-0.008053950034081936,
0.... |
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