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https://issues.apache.org/jira/browse/BOOKKEEPER-1061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16005925#comment-16005925
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ASF GitHub Bot commented on BOOKKEEPER-1061:
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Github user jvrao commented on the issue:
https://github.com/apache/bookkeeper/pull/149
@athanatos FYI
> BookieWatcher should not do ZK blocking operations from ZK async callback
> thread
> --------------------------------------------------------------------------------
>
> Key: BOOKKEEPER-1061
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-1061
> Project: Bookkeeper
> Issue Type: Bug
> Reporter: Matteo Merli
> Assignee: Matteo Merli
> Priority: Minor
> Fix For: 4.5.0
>
>
> In some cases, the BookieWatcher can get the ZK event thread stuck. This
> happens when a ZK blocking request is issued from a ZK callback thread.
> We should decouple the blocking requests in a separate executor to avoid
> deadlocking ZK client.
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