Arun Suresh created YARN-6963:
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Summary: Prevent other containers from staring when a container is
re-initializing
Key: YARN-6963
URL: https://issues.apache.org/jira/browse/YARN-6963
Project: Hadoop YARN
Issue Type: Bug
Reporter: Arun Suresh
Assignee: Arun Suresh
Further to discussions in YARN-6920.
Container re-initialization will lead to momentary relinquishing of NM
resources when the container is brought down followed by re-claiming of the
same resources when it is re-launched. If there are Opportunistic containers in
the queue, it can lead to un-necessary churn if one of those opportunistic
containers are started and immediately killed.
This JIRA tracks changes required to prevent the above by ensuring the
resources for a container are 'locked' for the during of the container lifetime
- including the time it takes for a re-initialization.
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