Make Yarn Node Manager services robust against shutdown
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Key: MAPREDUCE-4022
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4022
Project: Hadoop Map/Reduce
Issue Type: Sub-task
Components: mrv2
Affects Versions: 0.24.0, 0.23.2
Reporter: Steve Loughran
Assignee: Steve Loughran
Priority: Minor
Add the nodemanager bits of MAPREDUCE-3502 to shut down the Nodemanager
services. This is done by checking for fields being non-null before shutting
down/closing etc, and setting the fields to null afterwards -to be resilient
against re-entrancy.
No tests other than manual review.
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