Jerry.X.He created SPARK-20266:
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Summary: ExecutorBackend blocked at "UserGroupInformation.doAs"
Key: SPARK-20266
URL: https://issues.apache.org/jira/browse/SPARK-20266
Project: Spark
Issue Type: Question
Components: Project Infra
Affects Versions: 1.6.2
Reporter: Jerry.X.He
Priority: Minor
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