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https://issues.apache.org/jira/browse/IGNITE-13540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17209555#comment-17209555
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Anton Vinogradov commented on IGNITE-13540:
-------------------------------------------
Merged to master.
Thanks for your contribution.
> Exchange worker, waiting for new task from queue, considered as blocked.
> ------------------------------------------------------------------------
>
> Key: IGNITE-13540
> URL: https://issues.apache.org/jira/browse/IGNITE-13540
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 2.9, 2.8.1
> Reporter: Ivan Daschinskiy
> Assignee: Ivan Daschinskiy
> Priority: Minor
> Fix For: 2.10
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Waiting for new task in ExchangeWorker#body now is not marking as blocking
> section.
> So if network timeout (timeout for polling task from queue) is greater than
> system worker blocked timeout, exchange worker thread is considered as
> blocking. Sometimes this is reported in logs after few seconds when actually
> PME has been finished
> {noformat}
> [2020-10-06 16:55:45,939][INFO
> ][exchange-worker-#50][org.apache.ignite.internal.processors.cache.GridCachePartitionExchangeManager1]
> Skipping rebalancing (nothing scheduled) [top=AffinityTopologyVersion
> [topVer=6, minorTopVer=1], force=false, evt=DISCOVERY_CUSTOM_EVT,
> node=163fd0f0-b9a4-4317-a28f-f7dbdb776076]
> [2020-10-06 16:55:48,822][ERROR][tcp-disco-msg-worker-[9e18957a
> 172.18.0.5:47500]-#2-#44][org.apache.ignite.internal.util.typedef.G1] Blocked
> system-critical thread has been detected. This can lead to cluster-wide
> undefined behaviour [workerName=partition-exchanger,
> threadName=exchange-worker-#50, blockedFor=2s]
> [2020-10-06 16:55:48,824][WARN ][tcp-disco-msg-worker-[9e18957a
> 172.18.0.5:47500]-#2-#44][org.apache.ignite.internal.util.typedef.G1] Thread
> [name="exchange-worker-#50", id=90, state=TIMED_WAITING, blockCnt=20,
> waitCnt=48]
> Lock
> [object=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@14f29e0e,
> ownerName=null, ownerId=-1]
> [2020-10-06 16:55:48,827][WARN ][tcp-disco-msg-worker-[9e18957a
> 172.18.0.5:47500]-#2-#44][root1] Possible failure suppressed accordingly to a
> configured handler [hnd=StopNodeOrHaltFailureHandler [tryStop=false,
> timeout=0, super=AbstractFailureHandler [ignoredFailureTypes=UnmodifiableSet
> [SYSTEM_WORKER_BLOCKED, SYSTEM_CRITICAL_OPERATION_TIMEOUT]]],
> failureCtx=FailureContext [type=SYSTEM_WORKER_BLOCKED, err=class
> o.a.i.IgniteException: GridWorker [name=partition-exchanger,
> igniteInstanceName=null, finished=false, heartbeatTs=1601992545941]]]
> class org.apache.ignite.IgniteException: GridWorker
> [name=partition-exchanger, igniteInstanceName=null, finished=false,
> heartbeatTs=1601992545941]
> at
> org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance$3.apply(IgnitionEx.java:1860)
> at
> org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance$3.apply(IgnitionEx.java:1855)
> at
> org.apache.ignite.internal.worker.WorkersRegistry.onIdle(WorkersRegistry.java:234)
> at
> org.apache.ignite.internal.util.worker.GridWorker.onIdle(GridWorker.java:299)
> {noformat}
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