SaintBacchus created SPARK-12316:
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Summary: Stack overflow with endless call of `Delegation token
thread` when application end.
Key: SPARK-12316
URL: https://issues.apache.org/jira/browse/SPARK-12316
Project: Spark
Issue Type: Bug
Components: YARN
Affects Versions: 1.6.0
Reporter: SaintBacchus
When application end, AM will clean the staging dir.
But if the driver trigger to update the delegation token, it will can't find
the right token file and then it will endless cycle call the method
'updateCredentialsIfRequired'
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