You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@flink.apache.org by "Yun Tang (Jira)" <ji...@apache.org> on 2020/05/19 08:04:00 UTC
[jira] [Assigned] (FLINK-17808) Rename checkpoint meta file to
"_metadata" until it has completed writing
[ https://issues.apache.org/jira/browse/FLINK-17808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yun Tang reassigned FLINK-17808:
--------------------------------
Assignee: Yun Tang
> Rename checkpoint meta file to "_metadata" until it has completed writing
> -------------------------------------------------------------------------
>
> Key: FLINK-17808
> URL: https://issues.apache.org/jira/browse/FLINK-17808
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Checkpointing
> Affects Versions: 1.10.0
> Reporter: Yun Tang
> Assignee: Yun Tang
> Priority: Major
> Fix For: 1.12.0
>
>
> In practice, some developers or customers would use some strategy to find the recent _metadata as the checkpoint to recover (e.g as many proposals in FLINK-9043 suggest). However, there existed a "_meatadata" file does not mean the checkpoint have been completed as the writing to create the "_meatadata" file could break as some force quit (e.g. yarn application -kill).
> We could create the checkpoint meta stream to write data to file named as "_metadata.inprogress" and renamed it to "_metadata" once completed writing. By doing so, we could ensure the "_metadata" is not broken.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)