Hello,
I have a problem regarding content repository which fill up until eating all the space available (200GO). I'm using the following flow to ingest data continuously from an OPC Server and publish to a kafka server.
I have changed the nifi configuration as to make the ingestion fast without much latency as following :
# FlowFile Repository nifi.flowfile.repository.implementation=org.apache.nifi.controller.repository.VolatileFlowFileRepository nifi.flowfile.repository.wal.implementation=org.apache.nifi.wali.SequentialAccessWriteAheadLog nifi.flowfile.repository.directory=./flowfile_repository nifi.flowfile.repository.partitions=256 nifi.flowfile.repository.checkpoint.interval=2 mins nifi.flowfile.repository.always.sync=false nifi.swap.manager.implementation=org.apache.nifi.controller.FileSystemSwapManager nifi.queue.swap.threshold=20000 nifi.swap.in.period=5 sec nifi.swap.in.threads=1 nifi.swap.out.period=5 sec nifi.swap.out.threads=4 # Content Repository nifi.content.repository.implementation=org.apache.nifi.controller.repository.FileSystemRepository nifi.content.claim.max.appendable.size=1 MB nifi.content.claim.max.flow.files=10 nifi.content.repository.directory.default=./content_repository nifi.content.repository.archive.max.retention.period=1 hours nifi.content.repository.archive.max.usage.percentage=50% nifi.content.repository.archive.enabled=true nifi.content.repository.always.sync=false nifi.content.viewer.url=../nifi-content-viewer/ # Provenance Repository Properties nifi.provenance.repository.implementation=org.apache.nifi.provenance.VolatileProvenanceRepository nifi.provenance.repository.debug.frequency=1_000_000 nifi.provenance.repository.encryption.key.provider.implementation= nifi.provenance.repository.encryption.key.provider.location= nifi.provenance.repository.encryption.key.id= nifi.provenance.repository.encryption.key= # Persistent Provenance Repository Properties nifi.provenance.repository.directory.default=./provenance_repository nifi.provenance.repository.max.storage.time=2 hours nifi.provenance.repository.max.storage.size=1 GB nifi.provenance.repository.rollover.time=30 secs nifi.provenance.repository.rollover.size=100 MB nifi.provenance.repository.query.threads=2 nifi.provenance.repository.index.threads=2 nifi.provenance.repository.compress.on.rollover=true nifi.provenance.repository.always.sync=false # Comma-separated list of fields. Fields that are not indexed will not be searchable. Valid fields are: # EventType, FlowFileUUID, Filename, TransitURI, ProcessorID, AlternateIdentifierURI, Relationship, Details #nifi.provenance.repository.indexed.fields=EventType, FlowFileUUID, Filename, ProcessorID, Relationship nifi.provenance.repository.indexed.fields=EventType, FlowFileUUID, Filename, ProcessorID, Relationship, ContentClaimIdentifier # FlowFile Attributes that should be indexed and made searchable. Some examples to consider are filename, uuid, mime.type nifi.provenance.repository.indexed.attributes= # Large values for the shard size will result in more Java heap usage when searching the Provenance Repository # but should provide better performance nifi.provenance.repository.index.shard.size=500 MB # Indicates the maximum length that a FlowFile attribute can be when retrieving a Provenance Event from # the repository. If the length of any attribute exceeds this value, it will be truncated when the event is retrieved. nifi.provenance.repository.max.attribute.length=65536 nifi.provenance.repository.concurrent.merge.threads=2 # Volatile Provenance Respository Properties nifi.provenance.repository.buffer.size=100000 # Component Status Repository nifi.components.status.repository.implementation=org.apache.nifi.controller.status.history.VolatileComponentStatusRepository nifi.components.status.repository.buffer.size=1440 nifi.components.status.snapshot.frequency=1 min
