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https://issues.apache.org/jira/browse/HDFS-16676?focusedWorklogId=795120&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-795120
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ASF GitHub Bot logged work on HDFS-16676:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Jul/22 03:54
Start Date: 26/Jul/22 03:54
Worklog Time Spent: 10m
Work Description: PrabhuJoseph commented on PR #4626:
URL: https://github.com/apache/hadoop/pull/4626#issuecomment-1194967117
Thanks @ashutoshcipher for the patch. Can you include a test case.
Issue Time Tracking
-------------------
Worklog Id: (was: 795120)
Time Spent: 2h 40m (was: 2.5h)
> DatanodeAdminManager$Monitor reports a node as invalid continuously
> -------------------------------------------------------------------
>
> Key: HDFS-16676
> URL: https://issues.apache.org/jira/browse/HDFS-16676
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 3.2.1
> Reporter: Prabhu Joseph
> Assignee: groot
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> DatanodeAdminManager$Monitor reports a node as invalid continuously
> {code}
> 2022-07-21 06:54:38,562 WARN
> org.apache.hadoop.hdfs.server.blockmanagement.DatanodeAdminManager
> (DatanodeAdminMonitor-0): DatanodeAdminMonitor caught exception when
> processing node 1.2.3.4:9866.
> java.lang.IllegalStateException: Node 1.2.3.4:9866 is in an invalid state!
> Invalid state: In Service 0 blocks are on this dn.
> at
> com.google.common.base.Preconditions.checkState(Preconditions.java:172)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.DatanodeAdminManager$Monitor.check(DatanodeAdminManager.java:601)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.DatanodeAdminManager$Monitor.run(DatanodeAdminManager.java:504)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:750)
> {code}
> A node goes into invalid state when stopDecommission sets the node to
> IN-Service and misses to remove from pendingNodes queues (HDFS-16675). This
> will be corrected only when user triggers startDecommission. Till then we
> need not keep the invalid state node in the queue as anyway startDecommission
> will add it back.
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