tangshangwen created YARN-5187:
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Summary: when the preempt reduce happen, map resources priority
should be higher
Key: YARN-5187
URL: https://issues.apache.org/jira/browse/YARN-5187
Project: Hadoop YARN
Issue Type: Improvement
Reporter: tangshangwen
Assignee: tangshangwen
in our cluster, i found job hang long time, When the cluster resources
nervous，many reduce were killed, map no resources to run，i think when the
preempt reduce happen, map resources priority should be higher
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