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https://issues.apache.org/jira/browse/HDFS-15737?focusedWorklogId=526143&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-526143
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ASF GitHub Bot logged work on HDFS-15737:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 18/Dec/20 21:04
Start Date: 18/Dec/20 21:04
Worklog Time Spent: 10m
Work Description: sodonnel commented on pull request #2562:
URL: https://github.com/apache/hadoop/pull/2562#issuecomment-748318475
Thanks for the information - this may explain why HDFS-12703 was needed, as
some exceptions which were not logged at that time, caused the decommission
thread to stop running until the NN was restarted. The change there was to
catch the exception.
The change here looks correct to me, but as the issue exists on the trunk
branch, we should fix it there first, and then backport to 3.3, 3.2, 3.1 and
2.10 so the fix is in place across all branches.
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Issue Time Tracking
-------------------
Worklog Id: (was: 526143)
Time Spent: 1h 20m (was: 1h 10m)
> Don't remove datanodes from outOfServiceNodeBlocks while checking in
> DatanodeAdminManager
> -----------------------------------------------------------------------------------------
>
> Key: HDFS-15737
> URL: https://issues.apache.org/jira/browse/HDFS-15737
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Ye Ni
> Assignee: Ye Ni
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.10.2
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> With CyclicIteration, remove an item while iterating causes either dead loop
> or ConcurrentModificationException.
> This item should be removed by
> {{toRemove.add(dn);}}
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