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https://issues.apache.org/jira/browse/HDFS-13051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16336181#comment-16336181
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Kihwal Lee commented on HDFS-13051:
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[~daryn], please have a look.
> dead lock occurs when using async editlog while rolleditlog rpc call happen
> ---------------------------------------------------------------------------
>
> Key: HDFS-13051
> URL: https://issues.apache.org/jira/browse/HDFS-13051
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.7.5
> Reporter: zhangwei
> Priority: Major
>
> When we apply AsyncEditlog in our prod env, in extremely case, deadlock will
> occur and crash the namenode. in the case, rollEditlog rpc call happen while
> AsyncEditlog asynchronized takes edit object from queue and is going to
> acquire AsyncEditlog object lock to executed it's logEdit method.
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