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https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15127117#comment-15127117
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Xiao Chen commented on HDFS-9701:
---------------------------------
Thanks for the review and commit Eddy, and thanks Vinay and Xiaobing for the
review!
> DN may deadlock when hot-swapping under load
> --------------------------------------------
>
> Key: HDFS-9701
> URL: https://issues.apache.org/jira/browse/HDFS-9701
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Xiao Chen
> Assignee: Xiao Chen
> Fix For: 3.0.0, 2.8.0
>
> Attachments: HDFS-9701.01.patch, HDFS-9701.02.patch,
> HDFS-9701.03.patch, HDFS-9701.04.patch, HDFS-9701.05.patch
>
>
> If the DN is under load (new blocks being written), a hot-swap task by {{hdfs
> dfsadmin -reconfig}} may cause a dead lock.
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