id stringlengths 36 36 | document stringlengths 3 3k | metadata stringlengths 23 69 | embeddings listlengths 384 384 |
|---|---|---|---|
ded1ea83-2fc1-496f-a31b-e2be05edfc09 | Functions
array
and
map
were optimized to process certain common cases much faster.
#67707
(
李扬
).
Trivial optimize on ORC strings reading especially when a column contains no NULLs.
#67794
(
李扬
).
Improved overall performance of merges by reducing the overhead of scheduling steps of merges.
#68016
(
Anto... | {"source_file": "2024.md"} | [
0.002784130861982703,
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0.048754945397377014,
... |
0aa1f5a1-a50f-4f0e-9dbe-b4e4db204820 | When lightweight delete happens on a table with projection(s), despite users have choices either throw an exception (by default) or drop the projection when the lightweight delete would happen, now there is the third option to still have lightweight delete and then rebuild projection(s).
#66169
(
jsc0218
).
Two opt... | {"source_file": "2024.md"} | [
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0.04271203652024269,
0.043496839702129364,
-0.0098234... |
762c3d24-95ad-4e49-9e09-6a449dfa1890 | Update Database Factory so it would be possible for user defined database engines to have arguments, settings and table overrides (similar to StorageFactory).
#69201
(
NikBarykin
).
Restore mode that replaces all external table engines and functions to the
Null
engine (
restore_replace_external_engines_to_null
, ... | {"source_file": "2024.md"} | [
-0.0692368671298027,
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0.009549169801175594,
0.1331348717212677,
-0.080... |
75051063-f442-4fcf-824d-98b1eaf6610a | Fix window view missing blocks due to slow flush to view.
#67983
(
Raúl Marín
).
Fix MSan issue caused by incorrect date format.
#68105
(
JackyWoo
).
Fixed crash in Parquet filtering when data types in the file substantially differ from requested types (e.g.
... FROM file('a.parquet', Parquet, 'x String')
, bu... | {"source_file": "2024.md"} | [
0.022906064987182617,
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-0.09688083827495575,
-0.042... |
e2c7a1a4-9201-48d0-a333-8958b1795ee0 | Fix invalid character '\t' and '\n' in replica_name when creating a Replicated table, which causes incorrect parsing of 'source replica' in LogEntry. Mentioned in issue
#68640
.
#68645
(
Zhigao Hong
).
Added back virtual columns
_table
and
_database
to distributed tables. They were available until version 24.3... | {"source_file": "2024.md"} | [
-0.05236953869462013,
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-0.0... |
8fd4ebbc-f267-422d-b345-fddcb8846251 | Fix a bug that the vector similarity index (currently experimental) was not utilized when used with cosine distance as distance function.
#69090
(
flynn
).
This change addresses an issue where attempting to create a Replicated database again after a server failure during the initial creation process could result in... | {"source_file": "2024.md"} | [
-0.0825204998254776,
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0.08733183890581131,
-0.044... |
aee38945-96b5-4f43-89d7-e8675173d85b | Quick fix for s3queue problem on 24.6 or create query with database replicated.
#69454
(
Kseniia Sumarokova
).
Fixed case when memory consumption was too high because of the squashing in
INSERT INTO ... SELECT
or
CREATE TABLE AS SELECT
queries.
#69469
(
Yarik Briukhovetskyi
).
Statements
SHOW COLUMNS
and ... | {"source_file": "2024.md"} | [
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-0... |
00b37209-e522-45c3-a2f4-f825e956d4db | Fix logical errors with storage
Buffer
used with distributed destination table. It's a backward incompatible change: queries using
Buffer
with a distributed destination table may stop working if the table appears more than once in the query (e.g., in a self-join).
#67015
(
vdimir
).
In previous versions, callin... | {"source_file": "2024.md"} | [
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0.02645421214401722,
0.0140342... |
724d3d01-0af4-434c-b352-90e4c5390213 | Interpret Hive-style partitioning for different engines (
File
,
URL
,
S3
,
AzureBlobStorage
,
HDFS
). Hive-style partitioning organizes data into partitioned sub-directories, making it efficient to query and manage large datasets. Currently, it only creates virtual columns with the appropriate name and data. The f... | {"source_file": "2024.md"} | [
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-0... |
44595cc5-bb08-4a67-b795-50b813150ef6 | Performance Improvement {#performance-improvement-4}
Setting
optimize_functions_to_subcolumns
is enabled by default.
#68053
(
Anton Popov
).
Store the
plain_rewritable
disk directory metadata in
__meta
layout, separately from the merge tree data in the object storage. Move the
plain_rewritable
disk to a... | {"source_file": "2024.md"} | [
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0.0456266924738884,
-0.03563956916332245,
-0.0... |
6f2bb942-05ab-4035-8c49-48e73d9cc1c7 | Ignore
async_load_databases
for
ATTACH
query (previously it was possible for ATTACH to return before the tables had been attached).
#66240
(
Azat Khuzhin
).
Added logs and metrics for rejected connections (where there are not enough resources).
#66410
(
Alexander Tokmakov
).
Support proper
UUID
type for M... | {"source_file": "2024.md"} | [
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0.02144109271466732,
-0.0... |
4e8ec1d8-adf9-424d-80a4-342fa2f10591 | Add
-no-pie
to Aarch64 Linux builds to allow proper introspection and symbolizing of stacktraces after a ClickHouse restart.
#67916
(
filimonov
).
Added profile events for merges and mutations for better introspection.
#68015
(
Anton Popov
).
Remove unnecessary logs for non-replicated
MergeTree
.
#68238
(
... | {"source_file": "2024.md"} | [
0.007219698745757341,
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0.012362873181700706,
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0.0021121909376233816,
-0.01616314798593521,
... |
ec8aeced-e6c9-4309-8c7c-bd7611040684 | Fix cluster() for inter-server secret (preserve initial user as before).
#66364
(
Azat Khuzhin
).
Fix possible runtime error while converting Array field with nulls to Array(Variant).
#66727
(
Kruglov Pavel
).
Fix for occasional deadlock in Context::getDDLWorker.
#66843
(
Alexander Gololobov
).
Fix creating... | {"source_file": "2024.md"} | [
-0.058632247149944305,
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0.052343811839818954,
... |
ea525160-7a34-4f12-8299-f42c0e176e0d | It was possible to create a very deep nested JSON data that triggered stack overflow while skipping unknown fields. This closes
#67292
.
#67324
(
Alexey Milovidov
).
Fix attaching ReplicatedMergeTree table after exception during startup.
#67360
(
Antonio Andelic
).
Fix segfault caused by incorrectly detaching ... | {"source_file": "2024.md"} | [
-0.11136613041162491,
0.06662160158157349,
0.04169128090143204,
0.002553379163146019,
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0.018232719972729683,
0.01019533071666956,
-0.0854... |
662dc761-d6f5-4191-832d-0dacc04eb75e | Due to a bug in Linux Kernel, a query can hung in
TimerDescriptor::drain
. This closes
#37686
.
#67702
(
Alexey Milovidov
).
Fix completion of
RESTORE ON CLUSTER
command.
#67720
(
Vitaly Baranov
).
Fix dictionary hang in case of CANNOT_SCHEDULE_TASK while loading.
#67751
(
Azat Khuzhin
).
Queries like
... | {"source_file": "2024.md"} | [
-0.002605883404612541,
-0.01944173499941826,
0.006657968740910292,
0.09012584388256073,
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0.00943151768296957,
0.032123785465955734,
0.015917791053652763,
0.006467380560934544,
-0.04441393166780472,
-0.028591781854629517,
-... |
112ae9e3-c105-40f6-8e8e-5ec3025c5a87 | Change how deduplication for Materialized Views works. Fixed a lot of cases like: - on destination table: data is split for 2 or more blocks and that blocks is considered as duplicate when that block is inserted in parallel. - on MV destination table: the equal blocks are deduplicated, that happens when MV often produc... | {"source_file": "2024.md"} | [
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0.057500358670949936,
-0.0... |
d1b7706b-b271-463a-a023-ba0a49398e82 | Add system tables with main information about all detached tables.
#65400
(
Konstantin Morozov
).
Experimental Feature {#experimental-feature-4}
Change binary serialization of the
Variant
data type: add
compact
mode to avoid writing the same discriminator multiple times for granules with single variant or... | {"source_file": "2024.md"} | [
0.030570905655622482,
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0.0131... |
3804520d-e258-4937-b129-110ba2036cb1 | Support query plan LIMIT optimization. Support LIMIT pushdown for PostgreSQL storage and table function.
#65454
(
Maksim Kita
).
Improved ZooKeeper load balancing. The current session doesn't expire until the optimal nodes become available despite
fallback_session_lifetime
. Added support for AZ-aware balancing.
... | {"source_file": "2024.md"} | [
-0.03963668644428253,
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0.10250207781791687,
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0.0443590022623539,
0.00023476211936213076,
-0.026... |
3a6dd236-14ce-4e7c-8a58-de0f455816d2 | Added profile event
SelectQueriesWithPrimaryKeyUsage
which indicates how many SELECT queries use the primary key to evaluate the WHERE clause.
#64492
(
0x01f
).
StorageS3Queue
related fixes and improvements. Deduce a default value of
s3queue_processing_threads_num
according to the number of physical cpu cores ... | {"source_file": "2024.md"} | [
0.009736508131027222,
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0.08804009109735489,
-0.0964... |
56aa2431-3ce0-4043-982f-8eb40258fdb5 | Server settings
compiled_expression_cache_size
and
compiled_expression_cache_elements_size
are now shown in
system.server_settings
.
#65584
(
Robert Schulze
).
Add support for user identification based on x509 SubjectAltName extension.
#65626
(
Anton Kozlov
).
clickhouse-local
will respect the
max_server... | {"source_file": "2024.md"} | [
0.05273030325770378,
0.032125942409038544,
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0.06193649023771286,
-0.013169493526220322,
-0.11... |
e7bf2920-e862-431e-aef4-8221e73a0257 | Bug Fix (user-visible misbehavior in an official stable release) {#bug-fix-user-visible-misbehavior-in-an-official-stable-release-4}
Check cyclic dependencies on CREATE/REPLACE/RENAME/EXCHANGE queries and throw an exception if there is a cyclic dependency. Previously such cyclic dependencies could lead to a deadloc... | {"source_file": "2024.md"} | [
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0.0355895459651947,
-0.030... |
1b96ff95-04a4-4466-a21d-163a5062560b | Fixed bug in MergeJoin. Column in sparse serialisation might be treated as a column of its nested type though the required conversion wasn't performed.
#65632
(
Nikita Taranov
).
Fixed a bug that compatibility level '23.4' was not properly applied.
#65737
(
cw5121
).
Fix odbc table with nullable fields.
#65738... | {"source_file": "2024.md"} | [
-0.029583634808659554,
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0.004097748082131147,
-0.03963600471615791,
-... |
c75a91a2-b54c-4e83-96b5-10b450cea4d1 | Fix a possible hanging in
GRPCServer
during shutdown.
#66061
(
Vitaly Baranov
).
Fixed several cases in function
has
with non-constant
LowCardinality
arguments.
#66088
(
Anton Popov
).
Fix for
groupArrayIntersect
. It had incorrect behavior in the
merge()
function. Also, fixed behavior in
deserialise(... | {"source_file": "2024.md"} | [
-0.011443540453910828,
0.005488070659339428,
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... |
25fdca50-dfa4-4a1e-aafa-4d6350804537 | Added missing column materialization for cross join.
#66413
(
lgbo
).
Fix
Cannot find column
error for queries with constant expression in
GROUP BY
key and new analyzer enabled.
#66433
(
Nikolai Kochetov
).
Avoid possible logical error during import from Npy format in case of bad array nesting level, fix te... | {"source_file": "2024.md"} | [
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-0.... |
4ce208b1-a076-4a0d-b9e9-b527af5e60d3 | ClickHouse release 24.6, 2024-07-01 {#a-id246a-clickhouse-release-246-2024-07-01}
Backward Incompatible Change {#backward-incompatible-change-6}
Enable asynchronous load of databases and tables by default. See the
async_load_databases
in config.xml. While this change is fully compatible, it can introduce a diff... | {"source_file": "2024.md"} | [
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-0.073042... |
3e4138ad-779d-4fac-b44f-89394eafcd82 | New functions
snowflakeIDToDateTime
,
snowflakeIDToDateTime64
,
dateTimeToSnowflakeID
, and
dateTime64ToSnowflakeID
were added. Unlike the existing functions
snowflakeToDateTime
,
snowflakeToDateTime64
,
dateTimeToSnowflake
, and
dateTime64ToSnowflake
, the new functions are compatible with function
generateS... | {"source_file": "2024.md"} | [
-0.022183425724506378,
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-0.034666337072849274,
-0.0008324029622599483,
... |
3f5c5fa5-b8ac-4b8d-84ab-0a728f34b920 | Added a new table function
loop
to support returning query results in an infinite loop.
#63452
(
Sariel
). This is useful for testing.
Introduced two additional columns in the
system.query_log
:
used_privileges
and
missing_privileges
.
used_privileges
is populated with the privileges that were checked durin... | {"source_file": "2024.md"} | [
0.011227011680603027,
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70a44af1-d6f8-4f1c-a9b2-b9c31351dfdb | Use a thread pool to initialize and destroy hash tables inside
ConcurrentHashJoin
.
#64241
(
Nikita Taranov
).
Optimized vertical merges in tables with sparse columns.
#64311
(
Anton Popov
).
Enabled prefetches of data from remote filesystem during vertical merges. It improves latency of vertical merges in tab... | {"source_file": "2024.md"} | [
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d63e144c-461d-4266-aa7d-e32479cbca98 | Improve io_uring resubmit visibility. Rename profile event
IOUringSQEsResubmits
->
IOUringSQEsResubmitsAsync
and add a new one
IOUringSQEsResubmitsSync
.
#63699
(
Tomer Shafir
).
Added a new setting,
metadata_keep_free_space_bytes
to keep free space on the metadata storage disk.
#64128
(
MikhailBurdukov
).... | {"source_file": "2024.md"} | [
-0.014817140065133572,
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0... |
f01b08bb-969f-43e0-8327-473e4093eaf6 | Initialize global trace collector for
Poco::ThreadPool
(needed for Keeper, etc).
#65239
(
Kseniia Sumarokova
).
Add a validation when creating a user with
bcrypt_hash
.
#65242
(
Raúl Marín
).
Add profile events for number of rows read during/after
PREWHERE
.
#64198
(
Nikita Taranov
).
Print query in
EX... | {"source_file": "2024.md"} | [
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... |
3e1de10d-b406-4e9b-89b9-0324b0600c90 | This fix will use a proper redefined context with the correct definer for each individual view in the query pipeline.
#64079
(
pufit
).
Fix analyzer: "Not found column" error is fixed when using INTERPOLATE.
#64096
(
Yakov Olkhovskiy
).
Fix creating backups to S3 buckets with different credentials from the disk... | {"source_file": "2024.md"} | [
-0.0388849601149559,
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536f1ace-4ed4-4c95-b6fc-257bc410e5f8 | Fixes incorrect behaviour of ANSI CSI escaping in the
UTF8::computeWidth
function.
#64756
(
Shaun Struwig
).
Fix a case of incorrect removal of
ORDER BY
/
LIMIT BY
across subqueries.
#64766
(
Raúl Marín
).
Fix (experimental) unequal join with subqueries for sets which are in the mixed join conditions.
#6... | {"source_file": "2024.md"} | [
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41ad2f2a-6782-413c-8cd0-89df07b6b97d | Respond with 5xx instead of 200 OK in case of receive timeout while reading (parts of) the request body from the client socket.
#65118
(
Julian Maicher
).
Fix possible crash for hedged requests.
#65206
(
Azat Khuzhin
).
Fix the bug in Hashed and Hashed_Array dictionary short circuit evaluation, which may read u... | {"source_file": "2024.md"} | [
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0.0... |
9d4a3030-f88c-4880-aae3-40d4b8fa23a6 | Queries from
system.columns
will work faster if there is a large number of columns, but many databases or tables are not granted for
SHOW TABLES
. Note that in previous versions, if you grant
SHOW COLUMNS
to individual columns without granting
SHOW TABLES
to the corresponding tables, the
system.columns
table w... | {"source_file": "2024.md"} | [
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30830a9c-e7e6-4c15-99bc-43e827ed3d60 | Change warning on high number of attached tables to differentiate tables, views and dictionaries.
#64180
(
Francisco J. Jurado Moreno
).
Provide support for
azureBlobStorage
function in ClickHouse server to use Azure Workload identity to authenticate against Azure blob storage. If
use_workload_identity
paramete... | {"source_file": "2024.md"} | [
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0.0314... |
a9fce296-4439-432f-a667-11006d64e3cb | Add a new configuration
prefer_merge_sort_block_bytes
to control the memory usage and speed up sorting 2 times when merging when there are many columns.
#62904
(
LiuNeng
).
clickhouse-local
will start faster. In previous versions, it was not deleting temporary directories by mistake. Now it will. This closes
#62... | {"source_file": "2024.md"} | [
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2a31284c-6817-402f-ad66-9d0ed072f483 | Support for "Merge Key" in YAML configurations (this is a weird feature of YAML, please never mind).
#62685
(
Azat Khuzhin
).
Enhance error message when non-deterministic function is used with Replicated source.
#62896
(
Grégoire Pineau
).
Fix interserver secret for Distributed over Distributed from
remote
.
... | {"source_file": "2024.md"} | [
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... |
baa29b51-f1a3-432c-ab79-d161c93a3dbe | The Dockerfile is reviewed by the docker official library in https://github.com/docker-library/official-images/pull/15846.
#63400
(
Mikhail f. Shiryaev
).
Information about every symbol in every translation unit will be collected in the CI database for every build in the CI. This closes
#63494
.
#63495
(
Alexey ... | {"source_file": "2024.md"} | [
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-0.... |
87d81933-0462-4403-9197-1d04fbc2eed4 | Make
MergeTreePrefetchedReadPool
safer
#63513
(
Antonio Andelic
).
Fix crash on exit with sentry enabled (due to openssl destroyed before sentry)
#63548
(
Azat Khuzhin
).
Fix Array and Map support with Keyed hashing
#63628
(
Salvatore Mesoraca
).
Fix filter pushdown for Parquet and maybe StorageMerge
#63... | {"source_file": "2024.md"} | [
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... |
1c73af30-5de1-4d65-8678-0d5a5490679b | Fix azure backup writing multipart blocks by 1 MiB (read buffer size) instead of
max_upload_part_size
(in non-native copy case)
#64117
(
Kseniia Sumarokova
).
Correctly fallback during backup copy
#64153
(
Antonio Andelic
).
Prevent LOGICAL_ERROR on CREATE TABLE as materialized view
#64174
(
Raúl Marín
).
... | {"source_file": "2024.md"} | [
0.00606150645762682,
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-0.02... |
8286a5ed-8f79-40f9-901b-8cb2c2ac6999 | Add
SYSTEM UNLOAD PRIMARY KEY
to free up memory usage for a table's primary key.
#62738
(
Pablo Marcos
).
Added
value1
,
value2
, ...,
value10
columns to
system.text_log
. These columns contain values that were used to format the message.
#59619
(
Alexey Katsman
).
Added persistent virtual column
_block... | {"source_file": "2024.md"} | [
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0.030589813366532326,
-0.0618... |
f3a91318-d701-419b-8371-e98af7814621 | Speed up dynamic resize of filesystem cache.
#61723
(
Kseniia Sumarokova
).
Dictionary source with
INVALIDATE_QUERY
is not reloaded twice on startup.
#62050
(
vdimir
).
Fix an issue where when a redundant
= 1
or
= 0
is added after a boolean expression involving the primary key, the primary index is not us... | {"source_file": "2024.md"} | [
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0.03113947995007038,
0.06208263710141182,
-0.024799... |
c6b357ad-cc05-4bca-b43b-8999647d0f01 | Implement support for
input
for
clickhouse-local
.
#61923
(
Azat Khuzhin
).
Join
table engine with strictness
ANY
is consistent after reload. When several rows with the same key are inserted, the first one will have higher priority (before, it was chosen randomly upon table loading). close
#51027
.
#61972
... | {"source_file": "2024.md"} | [
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... |
e18de195-2156-43ae-805e-d882bf02d9fc | The query cache now no longer caches results of queries against system tables (
system.*
,
information_schema.*
,
INFORMATION_SCHEMA.*
).
#62376
(
Robert Schulze
).
MOVE PARTITION TO TABLE
query can be delayed or can throw
TOO_MANY_PARTS
exception to avoid exceeding limits on the part count. The same settings ... | {"source_file": "2024.md"} | [
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-0.037... |
d01adcdc-6dde-4e48-8380-db7a43d38d68 | Ignore DROP queries in stress test with 1/2 probability, use TRUNCATE instead of ignoring DROP in upgrade check for Memory/JOIN tables.
#61476
(
Kruglov Pavel
).
Remove from the Keeper Docker image the volumes at /etc/clickhouse-keeper and /var/log/clickhouse-keeper.
#61683
(
Tristan
).
Add tests for all issues... | {"source_file": "2024.md"} | [
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0.024... |
a70ce80c-ed09-402a-b819-7458e0e96141 | Cancel merges before removing moved parts
#61610
(
János Benjamin Antal
).
Fix abort in Apache Arrow
#61720
(
Kruglov Pavel
).
Search for
convert_to_replicated
flag at the correct path corresponding to the specific disk
#61769
(
Kirill
).
Fix possible connections data-race for distributed_foreground_inser... | {"source_file": "2024.md"} | [
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-... |
79115ce0-a298-4871-b91f-ef13a66d2d87 | Fix SimpleSquashingChunksTransform
#62451
(
Nikita Taranov
).
Fix capture of nested lambda.
#62462
(
Nikolai Kochetov
).
Avoid crash when reading protobuf with recursive types
#62506
(
Raúl Marín
).
Fix a bug moving one partition from one to itself
#62524
(
helifu
).
Fix scalar subquery in LIMIT
#62567... | {"source_file": "2024.md"} | [
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-0.00... |
95013107-a5b9-49f8-a2b5-f7fc376ac156 | ClickHouse release 24.3 LTS, 2024-03-27 {#a-id243a-clickhouse-release-243-lts-2024-03-27}
Upgrade Notes {#upgrade-notes-1}
The setting
allow_experimental_analyzer
is enabled by default and it switches the query analysis to a new implementation, which has better compatibility and feature completeness. The featur... | {"source_file": "2024.md"} | [
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0.... |
09250308-c77e-4dcf-9051-f58133e6c0b7 | The obsolete in-memory data parts have been deprecated since version 23.5 and have not been supported since version 23.10. Now the remaining code is removed. Continuation of
#55186
and
#45409
. It is unlikely that you have used in-memory data parts because they were available only before version 23.5 and only when y... | {"source_file": "2024.md"} | [
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-0... |
4c144ad9-3fa7-467e-bcf2-c23eb5201a68 | New Feature {#new-feature-9}
Support reading and writing backups as
tar
(in addition to
zip
).
#59535
(
josh-hildred
).
Implemented support for S3 Express buckets.
#59965
(
Nikita Taranov
).
Allow to attach parts from a different disk (using copy instead of hard link).
#60112
(
Unalian
).
Size-capped... | {"source_file": "2024.md"} | [
-0.033866893500089645,
-0.07955493032932281,
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-0.0... |
ad882303-2ee0-4709-8348-90cd9026a864 | Make HTTP/HTTPS connections with external services, such as AWS S3 reusable for all use cases. Even when the response is 3xx or 4xx.
#58845
(
Sema Checherinda
).
Improvements to aggregate functions
argMin
/
argMax
/
any
/
anyLast
/
anyHeavy
, as well as
ORDER BY {u8/u16/u32/u64/i8/i16/u32/i64) LIMIT 1
qu... | {"source_file": "2024.md"} | [
-0.040058329701423645,
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-0.031910259276628494,
0.051031097769737244,
-0.0... |
a1476006-d8fe-4cb4-a3f1-e973c7117969 | Add a setting
parallel_replicas_allow_in_with_subquery = 1
which allows subqueries for IN work with parallel replicas.
#60950
(
Nikolai Kochetov
).
A change for the "zero-copy" replication: all zero copy locks related to a table have to be dropped when the table is dropped. The directory which contains these lock... | {"source_file": "2024.md"} | [
-0.04298517107963562,
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0.03469467908143997,
0.02239103801548481,
-0.04745122417807579,
0.07303336262702942,
-0.116... |
e78d3577-70ee-462f-a819-a2e8898cbb25 | String types and Enums can be used in the same context, such as: arrays, UNION queries, conditional expressions. This closes
#60726
.
#60727
(
Alexey Milovidov
).
Allow declaring Enums in the structure of external data for query processing (this is an immediate temporary table that you can provide for your query).... | {"source_file": "2024.md"} | [
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6c7250ff-527c-41eb-a323-d057bb4453cb | Update tzdata to 2024a.
#60768
(
Raúl Marín
).
Keeper improvement: support
leadership_expiry_ms
in Keeper's settings.
#60806
(
Brokenice0415
).
Always infer exponential numbers in JSON formats regardless of the setting
input_format_try_infer_exponent_floats
. Add setting
input_format_json_use_string_type_fo... | {"source_file": "2024.md"} | [
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0.0461... |
d6ef2b1f-75d1-46f4-9e10-b99c6e6696ac | Fixed typo: from
use_leagcy_max_level
to
use_legacy_max_level
.
#61545
(
William Schoeffel
).
Remove some duplicate entries in
system.blob_storage_log
.
#61622
(
YenchangChan
).
Added
current_user
function as a compatibility alias for MySQL.
#61770
(
Yarik Briukhovetskyi
).
Fix inconsistent floating p... | {"source_file": "2024.md"} | [
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0.024... |
c195386e-9b6c-498f-987b-077451552197 | Fix "Invalid storage definition in metadata file" for parameterized views
#60708
(
Azat Khuzhin
).
Fix buffer overflow in CompressionCodecMultiple
#60731
(
Alexey Milovidov
).
Remove nonsense from SQL/JSON
#60738
(
Alexey Milovidov
).
Remove wrong assertion in aggregate function quantileGK
#60740
(
李扬
).
... | {"source_file": "2024.md"} | [
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0.... |
7ace5b86-3b76-4219-af1f-804ab70b5a21 | Fix addDays cause an error when used DateTime64
#61561
(
Shuai li
).
Disallow LowCardinality input type for JSONExtract
#61617
(
Julia Kartseva
).
Fix
system.part_log
for async insert with deduplication
#61620
(
Antonio Andelic
).
Fix a
Non-ready set
exception for system.parts.
#61666
(
Nikolai Kochet... | {"source_file": "2024.md"} | [
-0.05258233845233917,
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9a8cfc7c-40a8-4a8a-88d1-d09b13d1ebbf | Try to detect file format automatically during schema inference if it's unknown in
file/s3/hdfs/url/azureBlobStorage
engines. Closes
#50576
.
#59092
(
Kruglov Pavel
).
Implement auto-adjustment for asynchronous insert timeouts. The following settings are introduced: async_insert_poll_timeout_ms, async_insert_use... | {"source_file": "2024.md"} | [
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9a4e7669-ce03-47cb-bfea-874bdd2012e5 | Experimental Feature {#experimental-feature-8}
Added function
seriesOutliersDetectTukey
to detect outliers in series data using Tukey's fences algorithm.
#58632
(
Bhavna Jindal
). Keep in mind that the behavior will be changed in the next patch release.
Add function
variantType
that returns Enum with varian... | {"source_file": "2024.md"} | [
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5f1171a0-c1f7-49cd-978e-dd32c6ee6be3 | Keeper improvement: reduce size of data node even more.
#59592
(
Antonio Andelic
).
Continue optimizing branch miss of
if
function when result type is
Float*/Decimal*/*Int*
, follow up of https://github.com/ClickHouse/ClickHouse/pull/57885.
#59148
(
李扬
).
Optimize
if
function when the input type is
Map
, ... | {"source_file": "2024.md"} | [
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-0.0... |
95cad309-fcf9-4c64-a15a-41e37ea73b02 | Add support for the
Date32
type in the
T64
codec.
#58738
(
Hongbin Ma
).
Allow trailing commas in types with several items.
#59119
(
Aleksandr Musorin
).
Settings for the Distributed table engine can now be specified in the server configuration file (similar to MergeTree settings), e.g.
<distributed> <flus... | {"source_file": "2024.md"} | [
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0.... |
7fb8ed17-779c-4969-a693-2d7dd7b852f8 | After self-extraction temporary binary is moved instead copying.
#59661
(
Yakov Olkhovskiy
).
Fix stack unwinding on Apple macOS. This closes
#53653
.
#59690
(
Nikita Mikhaylov
).
Check for stack overflow in parsers even if the user misconfigured the
max_parser_depth
setting to a very high value. This closes... | {"source_file": "2024.md"} | [
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-0.078741... |
ce2515f2-0c37-483c-8d88-94f463f495fe | Update the Rust toolchain in
corrosion-cmake
when the CMake cross-compilation toolchain variable is set.
#59309
(
Aris Tritas
).
Add some fuzzing to ASTLiterals.
#59383
(
Raúl Marín
).
If you want to run initdb scripts every time when ClickHouse container is starting you shoud initialize environment varible C... | {"source_file": "2024.md"} | [
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-0.0215... |
4a7e2cb5-54f1-4353-b3cb-b99cde15965f | S3Queue: fix uninitialized value
#59897
(
Kseniia Sumarokova
).
Fix parsing of partition expressions surrounded by parens
#59901
(
János Benjamin Antal
).
Fix crash in JSONColumnsWithMetadata format over HTTP
#59925
(
Kruglov Pavel
).
Do not rewrite sum to count if the return value differs in Analyzer
#599... | {"source_file": "2024.md"} | [
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-... |
e1c7e36b-9adf-4c8e-a34a-7d4b3ffb91fd | Fix cosineDistance crash with Nullable
#60150
(
Raúl Marín
).
Allow casting of bools in string representation to true bools
#60160
(
Robert Schulze
).
Fix
system.s3queue_log
#60166
(
Kseniia Sumarokova
).
Fix arrayReduce with nullable aggregate function name
#60188
(
Raúl Marín
).
Hide sensitive info ... | {"source_file": "2024.md"} | [
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... |
f9ae136d-c50a-411e-ae44-4979be3e4c81 | Kusto
dialect is disabled until these two bugs will be fixed:
#59037
and
#59036
.
#59305
(
Alexey Milovidov
). Any attempt to use
Kusto
will result in exception.
More efficient implementation of the
FINAL
modifier no longer guarantees preserving the order even if
max_threads = 1
. If you counted on the pre... | {"source_file": "2024.md"} | [
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-... |
9d32fc52-096e-40f7-b132-824a8719e75d | Added function
sqidDecode
which decodes
Sqids
.
#58544
(
Robert Schulze
).
Allow to read Bool values into String in JSON input formats. It's done under a setting
input_format_json_read_bools_as_strings
that is enabled by default.
#58561
(
Kruglov Pavel
).
Added function
seriesDecomposeSTL
which decompose... | {"source_file": "2024.md"} | [
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0.0968... |
a2e79d70-431d-47eb-86ea-437fe6e73c1b | Performance Improvement {#performance-improvement-11}
Coordination for parallel replicas is rewritten for better parallelism and cache locality. It has been tested for linear scalability on hundreds of replicas. It also got support for reading in order.
#57968
(
Nikita Taranov
).
Replace HTTP outgoing buffering... | {"source_file": "2024.md"} | [
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-0.0... |
78e4ea10-3385-4154-9a88-355f90de0159 | Use one thread less in
clickhouse-local
.
#58968
(
Alexey Milovidov
).
Improve the
multiIf
function performance when the type is Nullable.
#57745
(
KevinyhZou
).
Add
SYSTEM JEMALLOC PURGE
for purging unused jemalloc pages,
SYSTEM JEMALLOC [ ENABLE | DISABLE | FLUSH ] PROFILE
for controlling jemalloc prof... | {"source_file": "2024.md"} | [
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-0.0... |
f7495a76-5f63-4e83-b590-5650f7bdfddf | sparkBar
as an alias to
sparkbar
.
#58335
(
凌涛
).
Avoid sending
ComposeObject
requests after upload to
GCS
.
#58343
(
Azat Khuzhin
).
Correctly handle keys with dot in the name in configurations XMLs.
#58354
(
Azat Khuzhin
).
Make function
format
return constant on constant arguments. This closes
#5... | {"source_file": "2024.md"} | [
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-0.1... |
71d77854-e806-4bba-9299-f7e3ed2f50a6 | A better exception message while conflict of creating dictionary and table with the same name.
#58841
(
Yarik Briukhovetskyi
).
Make sure that for custom (created from SQL) disks ether
filesystem_caches_path
(a common directory prefix for all filesystem caches) or
custom_cached_disks_base_directory
(a common di... | {"source_file": "2024.md"} | [
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0.009132... |
91224c99-ab7c-4bab-b664-877bc565fc4c | Fix bug in the experimental
_block_number
column which could lead to logical error during complex combination of
ALTER
s and
merge
s. Fixes
#56202
. Replaces
#58601
.
#59295
(
alesapin
).
Play UI understands when an exception is returned inside JSON. Adjustment for
#52853
.
#59303
(
Alexey Milovidov
).
/... | {"source_file": "2024.md"} | [
-0.026988105848431587,
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... |
d69cd96e-42d1-4d1d-a3ff-64c4698915d3 | A fix for the obsolete "zero-copy" replication feature: Fix lost blobs after dropping a replica with broken detached parts
#58333
(
Alexander Tokmakov
).
Allow users to work with symlinks in user_files_path
#58447
(
Duc Canh Le
).
Fix a crash when graphite table does not have an agg function
#58453
(
Duc Canh... | {"source_file": "2024.md"} | [
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-0.02... |
b9e2880e-a0e8-4df1-b33e-60331139c5d4 | Fix data race on query_factories_info
#59049
(
Kseniia Sumarokova
).
Disable "Too many redirects" error retry
#59099
(
skyoct
).
Fix not started database shutdown deadlock
#59137
(
Sergei Trifonov
).
Fix: LIMIT BY and LIMIT in distributed query
#59153
(
Igor Nikonov
).
Fix crash with nullable timezone f... | {"source_file": "2024.md"} | [
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-... |
7e9da82c-9159-4774-adb3-f71006335e97 | slug: /whats-new/changelog/2023
sidebar_position: 4
sidebar_label: '2023'
title: '2023 Changelog'
description: 'Changelog for 2023'
keywords: ['ClickHouse 2023', 'changelog 2023', 'release notes', 'version history', 'performance improvements']
doc_type: 'changelog'
Table of Contents {#table-of-contents}
ClickHous... | {"source_file": "2023.md"} | [
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-0.0... |
5c28ec1f-2d99-471b-803f-4b3f66e7281f | A handler
/binary
opens a visual viewer of symbols inside the ClickHouse binary.
#58211
(
Alexey Milovidov
).
Added a new SQL function
sqid
to generate Sqids (https://sqids.org/), example:
SELECT sqid(125, 126)
.
#57512
(
Robert Schulze
).
Add a new function
seriesPeriodDetectFFT
to detect series period ... | {"source_file": "2023.md"} | [
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0.... |
b615410d-59d7-41ad-90e9-f5defcc76701 | Performance Improvement {#performance-improvement}
Extract non-intersecting parts ranges from MergeTree table during FINAL processing. That way we can avoid additional FINAL logic for this non-intersecting parts ranges. In case when amount of duplicate values with same primary key is low, performance will be almost... | {"source_file": "2023.md"} | [
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0.002451305976137519,
-0.009067943319678307,
0.025507505983114243,
0.04607023671269417,
0.03610405698418617,
... |
a940604a-581c-4b4b-b1ae-d2828e841580 | Improvement {#improvement}
Support for soft memory limit in Keeper. It will refuse requests if the memory usage is close to the maximum.
#57271
(
Han Fei
).
#57699
(
Han Fei
).
Make inserts into distributed tables handle updated cluster configuration properly. When the list of cluster nodes is dynamically upd... | {"source_file": "2023.md"} | [
0.040012191981077194,
-0.048099126666784286,
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0.10687202215194702,
-0.06... |
0d3de96d-fca0-40af-bc91-1df5c9d400a8 | Allow nodes in the configuration file with
from_env
/
from_zk
reference and non empty element with replace=1.
#57628
(
Azat Khuzhin
).
A table function
fuzzJSON
which allows generating a lot of malformed JSON for fuzzing.
#57646
(
Julia Kartseva
).
Allow IPv6 to UInt128 conversion and binary arithmetic.
#5... | {"source_file": "2023.md"} | [
-0.08928735554218292,
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-0.0... |
6b3174bd-5905-418c-8530-d484da7a5a28 | Parallel replicas (experimental feature): disable parallel replicas with IN (subquery)
#58133
(
Igor Nikonov
).
Parallel replicas (experimental feature): add profile event 'ParallelReplicasUsedCount'
#58173
(
Igor Nikonov
).
Non POST requests such as HEAD will be readonly similar to GET.
#58060
(
San
).
Add... | {"source_file": "2023.md"} | [
-0.048309359699487686,
-0.01993531547486782,
-0.08987215906381607,
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0.09873716533184052,
-0.06... |
5ec7f457-de8a-46dd-848b-5a8f0f5cd663 | Fix crash in clickhouse-local
#57553
(
Nikolay Degterinsky
).
A fix for Hash JOIN.
#57564
(
vdimir
).
Fix possible error in PostgreSQL source
#57567
(
Kseniia Sumarokova
).
Fix type correction in Hash JOIN for nested LowCardinality.
#57614
(
vdimir
).
Avoid hangs of
system.stack_trace
by correctly pro... | {"source_file": "2023.md"} | [
-0.021471858024597168,
-0.045619938522577286,
0.008630947209894657,
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0.00937665719538927,
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-0.... |
d9714f38-46d5-4d2c-b1cf-1b7e6a92153a | Multiple improvements for
RESPECT NULLS
/
IGNORE NULLS
for window functions. If you use them as aggregate functions and store the states of aggregate functions with these modifiers, they might become incompatible.
#57189
(
Raúl Marín
).
Remove optimization
optimize_move_functions_out_of_any
.
#57190
(
Raúl Mar... | {"source_file": "2023.md"} | [
-0.017298588529229164,
0.06794518977403641,
-0.018298976123332977,
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0.01775694452226162,
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-0.10677436739206314,
-0.040168169885873795,
-0.... |
f98f2eef-4308-4538-b8b1-6e01e1e8f045 | Add new settings and syntax to protect named collections' fields from being overridden. This is meant to prevent a malicious user from obtaining unauthorized access to secrets.
#55782
(
Salvatore Mesoraca
).
Add
hostname
column to all system log tables - it is useful if you make the system tables replicated, shar... | {"source_file": "2023.md"} | [
-0.03747723624110222,
0.056102439761161804,
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0.1332024186849594,
-0... |
99a66ef0-f081-4499-b36b-c5057acc22d7 | Setting
join_algorithm
respects specified order
#51745
(
vdimir
).
Add support for the
well-known Protobuf types
in the Protobuf format.
#56741
(
János Benjamin Antal
).
Performance Improvement {#performance-improvement-1}
Adaptive timeouts for interacting with S3. The first attempt is made with low s... | {"source_file": "2023.md"} | [
-0.04104995355010033,
0.009960087016224861,
-0.0856018215417862,
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0.006378775462508202,
0.03405025601387024,
-0.1... |
a7361feb-dbd4-45f6-834d-8e737026d03d | Trivial count optimization for
Npy
data format: queries like
select count() from 'data.npy'
will work much more fast because of caching the results.
#56304
(
Yarik Briukhovetskyi
).
Queries with aggregation and a large number of streams will use less amount of memory during the plan's construction.
#57074
(
A... | {"source_file": "2023.md"} | [
-0.020310193300247192,
0.04113967716693878,
-0.0658128410577774,
0.06125640869140625,
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0.0643315315246582,
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0.06575232744216919,
-0.0010306754847988486,
0.022... |
6dd664b9-d6b6-41ad-92ba-1a92d970a70c | Set
background_fetches_pool_size
to 16, background_schedule_pool_size to 512 that is better for production usage with frequent small insertions.
#54327
(
Denny Crane
).
While read data from a csv format file, and at end of line is
\r
, which not followed by
\n
, then we will enconter the exception as follows
... | {"source_file": "2023.md"} | [
-0.02359504997730255,
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-0.02303144708275795,
-0.011679230257868767,
-0... |
76ebb420-9cbf-495c-97e1-6161bb119f8a | Add support for backing up and restoring tables using
KeeperMap
engine.
#56460
(
Antonio Andelic
).
404 response for CompleteMultipartUpload has to be rechecked. Operation could be done on server even if client got timeout or other network errors. The next retry of CompleteMultipartUpload receives 404 response. I... | {"source_file": "2023.md"} | [
-0.04275054484605789,
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0.026290906593203545,
0.05503816157579422,
-0.0... |
4f8e6988-ef68-41c3-8bce-f82fad14201b | Keeper improvement: disable compressed logs by default in Keeper.
#56763
(
Antonio Andelic
).
Add config setting
wait_dictionaries_load_at_startup
.
#56782
(
Vitaly Baranov
).
There was a potential vulnerability in previous ClickHouse versions: if a user has connected and unsuccessfully tried to authenticate w... | {"source_file": "2023.md"} | [
-0.07363153994083405,
0.053480442613363266,
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0.03906824812293053,
0.027358803898096085,
-0.00... |
beb4e737-e9df-44e8-b381-f442e31cf7a4 | Add
system.s3queue_log
to default config.
#57036
(
Kseniia Sumarokova
).
Change the default for
wait_dictionaries_load_at_startup
to true, and use this setting only if
dictionaries_lazy_load
is false.
#57133
(
Vitaly Baranov
).
Check dictionary source type on creation even if
dictionaries_lazy_load
is e... | {"source_file": "2023.md"} | [
0.015454812906682491,
0.021282292902469635,
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0.04908004775643349,
-0.010894089937210083,
-0.... |
6f44517c-e616-4867-9882-619805ab52b2 | Avoid recompiling translation units depending on the autogenerated source file about version.
#56660
(
Alexey Milovidov
).
Tracing data of the linker invocations will be sent to the CI database in ClickHouse Cloud.
#56725
(
Alexey Milovidov
).
Use DWARF 5 debug symbols for the clickhouse binary (was DWARF 4 pre... | {"source_file": "2023.md"} | [
-0.06610090285539627,
-0.015244357287883759,
-0.013821539469063282,
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-0.050305433571338654,
0.028646262362599373,
-0... |
75793346-cc23-45bf-8b8f-25e2e419b9b3 | Fix rare race condition related to Memory allocation failure
#56303
(
alesapin
).
Fix restore from backup with
flatten_nested
and
data_type_default_nullable
#56306
(
Kseniia Sumarokova
).
Fix crash in case of adding a column with type Object(JSON)
#56307
(
Nikita Mikhaylov
).
Fix crash in filterPushDown... | {"source_file": "2023.md"} | [
0.016925137490034103,
-0.012311676517128944,
-0.02688622660934925,
0.012950316071510315,
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0.03488248214125633,
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-0.016335884109139442,
-0.09059283137321472,
-0... |
d833561f-f77f-433f-acf6-2157875f19fd | Fix sqlite file path validation
#56984
(
San
).
S3Queue: fix metadata reference increment
#56990
(
Kseniia Sumarokova
).
S3Queue minor fix
#56999
(
Kseniia Sumarokova
).
Fix file path validation for DatabaseFileSystem
#57029
(
San
).
Fix
fuzzBits
with
ARRAY JOIN
#57033
(
Antonio Andelic
).
Fix N... | {"source_file": "2023.md"} | [
-0.04169066250324249,
-0.02781728282570839,
-0.0427735298871994,
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0.03523924574255943,
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-0.03284721449017525,
-0.01194713730365038,
-0.0... |
e3cbed7c-e937-46e7-b61d-42255c7de927 | Do not interpret the
send_timeout
set on the client side as the
receive_timeout
on the server side and vise-versa.
#56035
(
Azat Khuzhin
).
Comparison of time intervals with different units will throw an exception. This closes
#55942
. You might have occasionally rely on the previous behavior when the underlyi... | {"source_file": "2023.md"} | [
-0.013392382301390171,
0.007390293292701244,
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0.05684691667556763,
-0... |
b14d892c-821b-4165-9028-3117acf03021 | The second part of Kusto Query Language dialect support.
Phase 1 implementation
has been merged.
#42510
(
larryluogit
).
Added a new SQL function,
arrayRandomSample(arr, k)
which returns a sample of k elements from the input array. Similar functionality could previously be achieved only with less convenient sy... | {"source_file": "2023.md"} | [
-0.013301283121109009,
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0.023034928366541862,
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-0.030119208618998528,
0.02027049846947193,
-0.0... |
ffb21587-621d-4600-855a-d6674213c93d | Introduce a setting
create_table_empty_primary_key_by_default
for default
ORDER BY ()
.
#55899
(
Srikanth Chekuri
).
Performance Improvement {#performance-improvement-2}
Add option
query_plan_preserve_num_streams_after_window_functions
to preserve the number of streams after evaluating window functions t... | {"source_file": "2023.md"} | [
-0.020854059606790543,
0.07375101745128632,
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0.01691494695842266,
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0.010795958340168,
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0.02504304051399231,
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0.031389690935611725,
0.006357347592711449,
-0.0719... |
d13c1f7b-62c7-45fa-b925-7bba8626d048 | Caching skip-able entries while executing DDL from Zookeeper distributed DDL queue.
#54828
(
Duc Canh Le
).
Experimental inverted indexes do not store tokens with too many matches (i.e. row ids in the posting list). This saves space and avoids ineffective index lookups when sequential scans would be equally fast or... | {"source_file": "2023.md"} | [
-0.06060250848531723,
0.013755380176007748,
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0.015607531182467937,
-0.018497556447982788,
0.05525103583931923,
0.07968327403068542,
-0... |
eec60f2b-bd5e-4ea1-bb66-4e07991fca9f | Add a new column
xid
for
system.zookeeper_connection
.
#50702
(
helifu
).
Display the correct server settings in
system.server_settings
after configuration reload.
#53774
(
helifu
).
Add support for mathematical minus
−
character in queries, similar to
-
.
#54100
(
Alexey Milovidov
).
Add replica gr... | {"source_file": "2023.md"} | [
-0.03860963135957718,
-0.02777947299182415,
-0.04587983712553978,
0.005150134209543467,
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0.0043807257898151875,
0.046523772180080414,
-0.038139134645462036,
-0.057619769126176834,
0.0873652994632721,
-... |
8bee44cb-f197-4a57-a386-fad6886e87e4 | Select remote proxy resolver based on request protocol, add proxy feature docs and remove
DB::ProxyConfiguration::Protocol::ANY
.
#55430
(
Arthur Passos
).
Avoid retrying keeper operations on INSERT after table shutdown.
#55519
(
Azat Khuzhin
).
SHOW COLUMNS
now correctly reports type
FixedString
as
BLOB
... | {"source_file": "2023.md"} | [
-0.01393036637455225,
-0.004928990732878447,
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0.09579294919967651,
0.01665768399834633,
-0.0067744022235274315,
0.10084430873394012,
0.04... |
05e91b1b-ed7f-4aec-80d8-8500f31361b2 | Set limit of the maximum configuration value for
queued.min.messages
to avoid problem with start fetching data with Kafka.
#56121
(
Stas Morozov
).
Fixed a typo in SQL function
minSampleSizeContinous
(renamed
minSampleSizeContinuous
). Old name is preserved for backward compatibility. This closes:
#56139
.
#... | {"source_file": "2023.md"} | [
-0.03845207020640373,
0.01214470062404871,
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-0.01629471778869629,
-0.0... |
c0a87ecf-2f8b-4d3f-93c2-a45c0a48a970 | Suppress error statistics update for internal exceptions
#55128
(
Robert Schulze
).
Fix deadlock in backups
#55132
(
alesapin
).
Fix storage Iceberg files retrieval
#55144
(
Kseniia Sumarokova
).
Fix partition pruning of extra columns in set.
#55172
(
Amos Bird
).
Fix recalculation of skip indexes in AL... | {"source_file": "2023.md"} | [
-0.014634585939347744,
0.0012358658714219928,
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0.06155310571193695,
0.022581996396183968,
-0.011359157040715218,
-0.02967667765915394,
... |
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