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Posted to issues@flink.apache.org by "Dawid Wysakowicz (Jira)" <ji...@apache.org> on 2021/08/03 11:24:00 UTC

[jira] [Closed] (FLINK-21080) Handle UnionListState with finished operators

     [ https://issues.apache.org/jira/browse/FLINK-21080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dawid Wysakowicz closed FLINK-21080.
------------------------------------
    Resolution: Implemented

> Handle UnionListState with finished operators
> ---------------------------------------------
>
>                 Key: FLINK-21080
>                 URL: https://issues.apache.org/jira/browse/FLINK-21080
>             Project: Flink
>          Issue Type: Sub-task
>          Components: API / DataStream, Runtime / Checkpointing
>            Reporter: Yun Gao
>            Assignee: Yun Gao
>            Priority: Major
>              Labels: auto-unassigned, pull-request-available
>
> Most legacy source operators would record the offset for each partitions, and after recovery it would read from the recorded offset. If before a checkpoint some subtasks are finished, the corresponding partition offsets would be deserted in the checkpoint. Then if the job recover with this checkpoint, the legacy source would re-discovery all the partitions and for those finished tasks, the legacy source would re-read them since their offsets are not recorded. 
> Therefore, we would like to fail the checkpoint if some legacy source operators have part of subtasks finished. 



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