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Posted to issues@flink.apache.org by "renxiang zhou (Jira)" <ji...@apache.org> on 2023/03/02 12:23:00 UTC
[jira] [Commented] (FLINK-31249) Checkpoint timeout mechanism fails when finalizeCheckpoint is stuck
[ https://issues.apache.org/jira/browse/FLINK-31249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17695686#comment-17695686 ]
renxiang zhou commented on FLINK-31249:
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[~Yanfei Lei] [~masteryhx] Count you please have a look at this ticket ? :P
> Checkpoint timeout mechanism fails when finalizeCheckpoint is stuck
> -------------------------------------------------------------------
>
> Key: FLINK-31249
> URL: https://issues.apache.org/jira/browse/FLINK-31249
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Checkpointing
> Affects Versions: 1.11.6, 1.16.0
> Reporter: renxiang zhou
> Priority: Major
> Fix For: 1.18.0
>
> Attachments: image-2023-02-28-11-25-03-637.png, image-2023-02-28-12-04-35-178.png, image-2023-02-28-12-17-19-607.png
>
>
> When jobmanager receives all ACKs of tasks, it will finalize the pending checkpoint to a completed checkpoint. Currently JM finalizes the pending checkpoint with holding the checkpoint coordinator lock.
> When a DFS failure occurs, the {{jobmanager-future}} thread may be blocked at finalizing the pending checkpoint.
> !image-2023-02-28-12-17-19-607.png|width=1010,height=244!
> And then the next checkpoint is triggered, the {{Checkpoint Timer}} thread waits for the lock to be released.
> !image-2023-02-28-11-25-03-637.png|width=1144,height=248!
> If the previous checkpoint times out, the {{Checkpoint Timer}} will not execute the timeout event since it is blocked at waiting for the lock. As a result, the previous checkpoint cannot be cancelled.
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