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https://issues.apache.org/jira/browse/HDFS-10932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15534637#comment-15534637
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Hadoop QA commented on HDFS-10932:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 4s{color}
| {color:red} HDFS-10932 does not apply to trunk. Rebase required? Wrong
Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-10932 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12831020/HDFS-10932.001.patch |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/16936/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> Ozone : fix XceiverClient slow shutdown
> ---------------------------------------
>
> Key: HDFS-10932
> URL: https://issues.apache.org/jira/browse/HDFS-10932
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Chen Liang
> Assignee: Chen Liang
> Attachments: HDFS-10932.001.patch
>
>
> Currently {{XceiverClient}} is the underlying entity of
> {{DistributedStorageHandler.newKeyWriter()}} and
> {{DistributedStorageHandler.newKeyReader()}} for making call to container
> for read/write. When {{XceiverClient}} gets closed,
> {{group.shutdownGracefully()}} gets called, which is an asynchronous call.
> A problem is that this asynchronous call has default quiet period of 2
> seconds before it actually shutdown, so if we have a burst of read/write
> calls, we would end up having threads created faster than they got
> terminated, reaching system limit at some point.
> Ideally, this needs to be fixed with cached clients instead of creating new
> thread each time. This JIRA only tries to give a temporary fix for the time
> being.
> Thanks [~anu] for the offline discussion.
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