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https://issues.apache.org/jira/browse/YARN-9607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adam Antal updated YARN-9607:
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    Attachment: YARN-9607.002.patch

> Auto-configuring rollover-size of IFile format for non-appendable filesystems
> -----------------------------------------------------------------------------
>
>                 Key: YARN-9607
>                 URL: https://issues.apache.org/jira/browse/YARN-9607
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: log-aggregation, yarn
>    Affects Versions: 3.3.0
>            Reporter: Adam Antal
>            Assignee: Adam Antal
>            Priority: Major
>         Attachments: YARN-9607.001.patch, YARN-9607.002.patch
>
>
> In YARN-9525, we made IFile format compatible with remote folders with s3a 
> scheme. In rolling fashioned log-aggregation IFile still fails with the 
> "append is not supported" error message, which is a known limitation of the 
> format by design. 
> There is a workaround though: setting the rollover size in the configuration 
> of the IFile format, in each rolling cycle a new aggregated log file will be 
> created, thus we eliminated the append from the process. Setting this config 
> globally would cause performance problems in the regular log-aggregation, so 
> I'm suggesting to enforcing this config to zero, if the scheme of the URI is 
> s3a (or any other non-appendable filesystem).



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