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https://issues.apache.org/jira/browse/BOOKKEEPER-55?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13529041#comment-13529041
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Flavio Junqueira commented on BOOKKEEPER-55:
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[~hustlmsp] Sounds good, Sijie.
> SubscribeReconnectRetryTask might retry subscription endlessly when another
> subscription is already successfully created previously
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: BOOKKEEPER-55
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-55
> Project: Bookkeeper
> Issue Type: Bug
> Components: hedwig-client
> Affects Versions: 4.0.0
> Reporter: Gavin Li
> Assignee: Sijie Guo
> Fix For: 4.2.0
>
> Attachments: patch
>
>
> For channelDisconnected envent, we try to automatically recover the
> connection and subscription. But when users call HedwigSubscriber.subscribe()
> at the same time, it might succeed before the auto recovery. Then the auto
> recovery can never succeed as the server will report topic busy failure. Then
> the SubscribeReconnectRetryTask will retry again and again endlessly. We
> found this in our auto test.
> Fix is easy, we just need to firstly check if the channel for this topic and
> subscribe id is null, if not it means some subscription is already created
> before, we don't need to bother recover.
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