Srikanth Kandula created YARN-4056:
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Summary: Bundling: Searching for multiple containers in a single
pass over {queues, applications, priorities}
Key: YARN-4056
URL: https://issues.apache.org/jira/browse/YARN-4056
Project: Hadoop YARN
Issue Type: New Feature
Components: capacityscheduler, resourcemanager, scheduler
Reporter: Srikanth Kandula
More than one container is allocated on many NM heartbeats. Yet, the current
scheduler allocates exactly one container per iteration over {queues,
applications, priorities}. When there are many queues, applications, or
priorities allocating only one container per iteration can needlessly increase
the duration of the NM heartbeat.
In this JIRA, we propose bundling. That is, allow arbitrarily many containers
to be allocated in a single iteration over {queues, applications and
priorities}.
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