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https://issues.apache.org/jira/browse/BOOKKEEPER-752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13993003#comment-13993003
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Ivan Kelly commented on BOOKKEEPER-752:
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Patch looks good. Does the sensible thing. +1.
I can't see where the deadlock would be though. In #shutdown, #clear acquires
the NIOServerFactory lock. I don't see it acquiring the lock on the Cnxn though.
> Deadlock on NIOServer shutdown
> ------------------------------
>
> Key: BOOKKEEPER-752
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-752
> Project: Bookkeeper
> Issue Type: Bug
> Components: bookkeeper-server
> Affects Versions: 4.2.2
> Reporter: Sijie Guo
> Assignee: Sijie Guo
> Fix For: 4.2.3
>
> Attachments: BOOKKEEPER-752.diff
>
>
> Not all places in NIOServerFactory acquire locks in order, which cause
> deadlock on shutdown.
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