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https://issues.apache.org/jira/browse/HDFS-16596?focusedWorklogId=775125&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-775125
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ASF GitHub Bot logged work on HDFS-16596:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/May/22 16:02
Start Date: 26/May/22 16:02
Worklog Time Spent: 10m
Work Description: saintstack commented on code in PR #4360:
URL: https://github.com/apache/hadoop/pull/4360#discussion_r882832172
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hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml:
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@@ -3003,10 +3003,10 @@
</property>
<property>
- <name>dfs.datanode.fsdatasetasyncdisk.max.threads.per.volume</name>
- <value>4</value>
+ <name>dfs.datanode.fsdatasetasyncdisk.core.threads.per.volume</name>
+ <value>1</value>
<description>
- The maximum number of threads per volume used to process async disk
+ The number of core threads per volume used to process async disk
Review Comment:
Suggest you leave the old config alone and introduce a new one for core
thread count.
Issue Time Tracking
-------------------
Worklog Id: (was: 775125)
Time Spent: 20m (was: 10m)
> 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: 20m
> 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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