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https://issues.apache.org/jira/browse/HDFS-16163?focusedWorklogId=638049&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-638049
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ASF GitHub Bot logged work on HDFS-16163:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 16/Aug/21 05:42
Start Date: 16/Aug/21 05:42
Worklog Time Spent: 10m
Work Description: ferhui commented on pull request #3296:
URL: https://github.com/apache/hadoop/pull/3296#issuecomment-899238455
@virajjasani Thanks for contribution
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Issue Time Tracking
-------------------
Worklog Id: (was: 638049)
Time Spent: 2h 10m (was: 2h)
> Avoid locking entire blockPinningFailures map
> ---------------------------------------------
>
> Key: HDFS-16163
> URL: https://issues.apache.org/jira/browse/HDFS-16163
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Time Spent: 2h 10m
> Remaining Estimate: 0h
>
> In order for mover to exclude pinned blocks in subsequent iteration, we try
> to put pinned blocks in a map of blockIds to set of Datanode sources.
> However, while updating an entry of this map, we don't need to lock the
> entire map. We can use fine-grained concurrency here.
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