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https://issues.apache.org/jira/browse/HDDS-7989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen O'Donnell updated HDDS-7989:
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Fix Version/s: 1.4.0
Resolution: Fixed
Status: Resolved (was: Patch Available)
> UnhealthyReplicationProcessor retries failure without delay
> -----------------------------------------------------------
>
> Key: HDDS-7989
> URL: https://issues.apache.org/jira/browse/HDDS-7989
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: SCM
> Affects Versions: 1.4.0
> Reporter: Attila Doroszlai
> Assignee: Attila Doroszlai
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.4.0
>
>
> {{UnhealthyReplicationProcessor#processAll}} requeues any failed task. Such
> tasks are attempted in the same {{processAll}} call. This can flood SCM logs
> until the cause of the error is resolved.
> Example steps:
> # Start cluster with 5 datanodes
> # Create EC(3,2) key
> # Stop two datanodes
> # Wait until SCM starts emitting error for the same container
> {code}
> scm_1 | 2023-02-17 18:08:51,091 [Under Replicated Processor] WARN
> replication.ECUnderReplicationHandler: Exception while processing for
> creating the EC reconstruction container commands for #5.
> scm_1 | org.apache.hadoop.hdds.scm.exceptions.SCMException: No enough
> datanodes to choose. TotalNode = 3 AvailableNode = 0 RequiredNode = 2
> ExcludedNode = 3
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.placement.algorithms.SCMContainerPlacementRackScatter.chooseDatanodesInternal(SCMContainerPlacementRackScatter.java:238)
> scm_1 | at
> org.apache.hadoop.hdds.scm.SCMCommonPlacementPolicy.chooseDatanodes(SCMCommonPlacementPolicy.java:185)
> scm_1 | at
> org.apache.hadoop.hdds.scm.SCMCommonPlacementPolicy.chooseDatanodes(SCMCommonPlacementPolicy.java:127)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ECUnderReplicationHandler.getTargetDatanodes(ECUnderReplicationHandler.java:266)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ECUnderReplicationHandler.processMissingIndexes(ECUnderReplicationHandler.java:295)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ECUnderReplicationHandler.processAndCreateCommands(ECUnderReplicationHandler.java:174)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ReplicationManager.processUnderReplicatedContainer(ReplicationManager.java:608)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnderReplicatedProcessor.getDatanodeCommands(UnderReplicatedProcessor.java:58)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnderReplicatedProcessor.getDatanodeCommands(UnderReplicatedProcessor.java:32)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnhealthyReplicationProcessor.processContainer(UnhealthyReplicationProcessor.java:119)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnhealthyReplicationProcessor.processAll(UnhealthyReplicationProcessor.java:93)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnhealthyReplicationProcessor.run(UnhealthyReplicationProcessor.java:132)
> scm_1 | at java.base/java.lang.Thread.run(Thread.java:829)
> scm_1 | 2023-02-17 18:08:51,091 [Under Replicated Processor] ERROR
> replication.UnhealthyReplicationProcessor: Error processing Health result of
> class: class
> org.apache.hadoop.hdds.scm.container.replication.ContainerHealthResult$UnderReplicatedHealthResult
> for container ContainerInfo{id=#5, state=CLOSED,
> pipelineID=PipelineID=0ccdaf17-dc73-4974-a660-c2bb51a3402e,
> stateEnterTime=2023-02-17T17:59:05.707Z, owner=om1}
> scm_1 | org.apache.hadoop.hdds.scm.exceptions.SCMException: No enough
> datanodes to choose. TotalNode = 3 AvailableNode = 0 RequiredNode = 2
> ExcludedNode = 3
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.placement.algorithms.SCMContainerPlacementRackScatter.chooseDatanodesInternal(SCMContainerPlacementRackScatter.java:238)
> scm_1 | at
> org.apache.hadoop.hdds.scm.SCMCommonPlacementPolicy.chooseDatanodes(SCMCommonPlacementPolicy.java:185)
> scm_1 | at
> org.apache.hadoop.hdds.scm.SCMCommonPlacementPolicy.chooseDatanodes(SCMCommonPlacementPolicy.java:127)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ECUnderReplicationHandler.getTargetDatanodes(ECUnderReplicationHandler.java:266)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ECUnderReplicationHandler.processMissingIndexes(ECUnderReplicationHandler.java:295)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ECUnderReplicationHandler.processAndCreateCommands(ECUnderReplicationHandler.java:174)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.ReplicationManager.processUnderReplicatedContainer(ReplicationManager.java:608)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnderReplicatedProcessor.getDatanodeCommands(UnderReplicatedProcessor.java:58)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnderReplicatedProcessor.getDatanodeCommands(UnderReplicatedProcessor.java:32)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnhealthyReplicationProcessor.processContainer(UnhealthyReplicationProcessor.java:119)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnhealthyReplicationProcessor.processAll(UnhealthyReplicationProcessor.java:93)
> scm_1 | at
> org.apache.hadoop.hdds.scm.container.replication.UnhealthyReplicationProcessor.run(UnhealthyReplicationProcessor.java:132)
> scm_1 | at java.base/java.lang.Thread.run(Thread.java:829)
> ...
> No space left on device
> {code}
> The same messages are repeated without any delay.
> I think tasks should be collected and requeued outside of the processing loop.
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