[
https://issues.apache.org/jira/browse/FLINK-17808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17463604#comment-17463604
]
Yun Tang commented on FLINK-17808:
----------------------------------
[~zuston] It seems FileSystem#createRecoverableWriter is only optional on file
systems and various file system implementations may not support this method,
did you consider file systems which not support this feature?
> 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
> Priority: Minor
> Labels: auto-deprioritized-major, pull-request-available
> Fix For: 1.15.0
>
>
> 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
(v8.20.1#820001)
