Stephen O'Donnell created HDDS-8746:
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Summary: Add metrics to ReplicationSupervisor for task count and
max stream
Key: HDDS-8746
URL: https://issues.apache.org/jira/browse/HDDS-8746
Project: Apache Ozone
Issue Type: Sub-task
Components: SCM
Reporter: Stephen O'Donnell
Assignee: Stephen O'Donnell
To give added visibility into the Replication Queue on a datanode, this Jira
adds some extra metrics to give visibility into the count of "normal priority"
Replication and Reconstruction tasks, along with the current maxStreams
setting, which is automatically adjusted when the node moves into decommission.
This was tested manually in Docker compose by sampling the JMX output. Sample
output:
{code}
"name" : "Hadoop:service=HddsDatanode,name=ReplicationSupervisorMetrics",
"modelerType" : "ReplicationSupervisorMetrics",
"tag.Hostname" : "b297306fcf0f",
"numInFlightReplications" : 5,
"numQueuedReplications" : 4,
"numRequestedReplications" : 1,
"numTimeoutReplications" : 0,
"numSkippedReplications" : 0,
"maxReplicationStreams" : 1, ** newly added
"numInflightECReconstructionCoordinatorTask" : 5 ** newly added
"name" : "Hadoop:service=HddsDatanode,name=ReplicationSupervisorMetrics",
"modelerType" : "ReplicationSupervisorMetrics",
"tag.Hostname" : "b297306fcf0f",
"numInFlightReplications" : 1,
"numQueuedReplications" : 0,
"numRequestedReplications" : 6,
"numTimeoutReplications" : 0,
"numSkippedReplications" : 0,
"maxReplicationStreams" : 1, ** newly added
"numInflightReplicationTask" : 1, ** newly added
"numInflightECReconstructionCoordinatorTask" : 0 ** newly added
{code}
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