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https://issues.apache.org/jira/browse/RATIS-622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17084256#comment-17084256
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Jitendra Nath Pandey commented on RATIS-622:
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[~an...@apache.org] [~elserj] this one probably needs to be rebased to get
committed. It has been reviewed once already.
> createLog will block indefinitely if group creation fails
> ---------------------------------------------------------
>
> Key: RATIS-622
> URL: https://issues.apache.org/jira/browse/RATIS-622
> Project: Ratis
> Issue Type: Bug
> Components: LogService
> Reporter: Josh Elser
> Assignee: Josh Elser
> Priority: Critical
> Fix For: 0.6.0
>
> Attachments: RATIS-622.001.patch
>
>
> I've seen this bug a few times, but finally got to the bottom of it. The
> VerificationTool will get to the end, but not exit. The reason is that at
> least one log has still not yet been created.
> * The client will be blocked asking the metadataquorum to create a log
> * The metadata leader will have tons of threads blocked on the writeLock
> What I just found today was an exception, logged to stderr (not stdout), that
> was thrown when the group create failed.
> However, we don't catch and re-throw this exception on group create failure,
> but proceed then to try to send a message to the group which failed to be
> created.
> We must catch this failure, try to clean up, and propagate the original
> createLog exception back to the client.
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