Jason Lowe created YARN-261:
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Summary: Ability to kill AM attempts
Key: YARN-261
URL: https://issues.apache.org/jira/browse/YARN-261
Project: Hadoop YARN
Issue Type: New Feature
Components: api
Affects Versions: 2.0.3-alpha
Reporter: Jason Lowe
It would be nice if clients could ask for an AM attempt to be killed. This is
analogous to the task attempt kill support provided by MapReduce.
This feature would be useful in a scenario where AM retries are enabled, the AM
supports recovery, and a particular AM attempt is stuck. Currently if this
occurs the user's only recourse is to kill the entire application, requiring
them to resubmit a new application and potentially breaking downstream
dependent jobs if it's part of a bigger workflow. Killing the attempt would
allow a new attempt to be started by the RM without killing the entire
application, and if the AM supports recovery it could potentially save a lot of
work. It could also be useful in workflow scenarios where the failure of the
entire application kills the workflow, but the ability to kill an attempt can
keep the workflow going if the subsequent attempt succeeds.
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