Karthik Kambatla created YARN-454:
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Summary: FS could wait until next NODE_UPDATE event to schedule a
reserved container
Key: YARN-454
URL: https://issues.apache.org/jira/browse/YARN-454
Project: Hadoop YARN
Issue Type: Improvement
Components: scheduler
Affects Versions: 2.0.3-alpha
Reporter: Karthik Kambatla
Assignee: Karthik Kambatla
FS#nodeUpdate() allocates reserved containers first. However, it seems (from
code observation): if an app reserves a container on a node while FS is
scheduling a task on that node from the non-reserved pool, the request is
skipped in that NODE_UPDATE event. It is addressed on the next event.
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