platform/dataops/dto/lineage/janusgraph_config.properties

# JanusGraph Configuration for DTO Data Lineage
# Tracks data provenance and dependencies across transfer operations

# Graph Storage Backend
storage.backend=cql
storage.hostname=localhost
storage.port=9042
storage.cql.keyspace=dto_lineage
storage.cql.replication-factor=2
storage.cql.replication-strategy-class=SimpleStrategy

# Index Backend for Graph Queries
index.search.backend=elasticsearch
index.search.hostname=localhost
index.search.port=9200
index.search.elasticsearch.index-name=dto_lineage
index.search.elasticsearch.client-only=false

# Serialization Configuration (FIX: Proper Kryo serialization)
storage.serializer=org.janusgraph.graphdb.serializer.SpecializedSerializer
storage.serializer.class=org.janusgraph.graphdb.serializer.StandardSerializer
storage.serializer.buffer-size=512000
storage.serializer.parallel-backend-ops=true

# Graph Cache Settings
cache.db-cache=true
cache.db-cache-clean-wait=20
cache.db-cache-time=180000
cache.db-cache-size=0.5

# Transaction Settings
storage.transactions=true
storage.setup-wait=30000
storage.lock.wait=10000
storage.lock.retry=3

# Performance Optimizations for DTO Workloads
storage.batch-loading=false
storage.buffer-size=1024
storage.write-time=100000
storage.read-time=10000

# DTO-specific Schema Configuration
schema.default=none
schema.constraints=true
graph.set-vertex-id=false
graph.allow-custom-vertex-id-types=false

# Logging Configuration
log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

# Thread Pool Configuration
storage.parallel-backend-ops=true
storage.connection-pool-size=10
storage.connection-timeout=60000

# Metrics and Monitoring
metrics.enabled=true
metrics.prefix=dto.lineage
metrics.csv.interval=30000