Steve Loughran created YARN-4696:
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Summary: EntityGroupFSTimelineStore to work in the absence of an RM
Key: YARN-4696
URL: https://issues.apache.org/jira/browse/YARN-4696
Project: Hadoop YARN
Issue Type: Sub-task
Components: timelineserver
Affects Versions: 2.8.0
Reporter: Steve Loughran
{{EntityGroupFSTimelineStore}} now depends on an RM being up and running; the
configuration pointing to it. This is a new change, and impacts testing where
you have historically been able to test without an RM running.
The sole purpose of the probe is to automatically determine if an app is
running; it falls back to "unknown" if not. If the RM connection was optional,
the "unknown" codepath could be called directly, relying on age of file as a
metric of completion
Options
# add a flag to disable RM connect
# skip automatically if RM not defined/set to 0.0.0.0
# disable retries on yarn client IPC; if it fails, tag app as unknown.
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