Adam Antal created YARN-9607:
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Summary: 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
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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