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https://issues.apache.org/jira/browse/HDFS-16596?focusedWorklogId=779141&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-779141
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ASF GitHub Bot logged work on HDFS-16596:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 07/Jun/22 15:00
            Start Date: 07/Jun/22 15:00
    Worklog Time Spent: 10m 
      Work Description: ZanderXu commented on PR #4360:
URL: https://github.com/apache/hadoop/pull/4360#issuecomment-1148793254

   Thanks @saintstack for you suggestion.
   I have updated the patch according your suggestion, and help me review it 
again, thanks~ 




Issue Time Tracking
-------------------

    Worklog Id:     (was: 779141)
    Time Spent: 50m  (was: 40m)

> Improve the processing capability of FsDatasetAsyncDiskService
> --------------------------------------------------------------
>
>                 Key: HDFS-16596
>                 URL: https://issues.apache.org/jira/browse/HDFS-16596
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: ZanderXu
>            Assignee: ZanderXu
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> In our production environment, when DN needs to delete a large number blocks, 
> we find that many deletion tasks are backlogged in the queue of 
> threadPoolExecutor in FsDatasetAsyncDiskService. We can't improve its 
> throughput because the number of core threads is hard coded.
> So DN needs to support the number of core threads of 
> FsDatasetAsyncDiskService can be configured.



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