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https://issues.apache.org/jira/browse/HDFS-16432?focusedWorklogId=723519&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-723519
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ASF GitHub Bot logged work on HDFS-16432:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 09/Feb/22 09:07
Start Date: 09/Feb/22 09:07
Worklog Time Spent: 10m
Work Description: liubingxing commented on pull request #3907:
URL: https://github.com/apache/hadoop/pull/3907#issuecomment-1033522348
@sodonnel I attached the flame chart svg file to the Jira.
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Issue Time Tracking
-------------------
Worklog Id: (was: 723519)
Time Spent: 2h 20m (was: 2h 10m)
> Namenode block report add yield to avoid holding write lock too long
> --------------------------------------------------------------------
>
> Key: HDFS-16432
> URL: https://issues.apache.org/jira/browse/HDFS-16432
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: qinyuren
> Priority: Major
> Labels: pull-request-available
> Attachments: 20220209-120613.html, image-2022-01-20-15-19-28-384.png
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> !image-2022-01-20-15-19-28-384.png|width=683,height=132!
> In our cluster, namenode block report will held write lock for a long time if
> the storage block number more than 100000. So we want to add a yield
> mechanism in block reporting process to avoid holding write lock too long.
> # Ensure that the processing of the same block is in the same write lock.
> # Because StorageInfo.addBlock will moves the block to the head of
> blockList, so we can collect blocks that have not been reported by delimiter
> block.
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