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Hive 0.14.0 and later:  HDFS root scratch directory for Hive jobs, which gets created with write all (733) permission. For each connecting user, an HDFS scratch directory ${hive.exec.scratchdir}/<username> is created with ${hive.scratch.dir.permission}.

Also see hive.start.cleanup.scratchdir.

hive.scratch.dir.permission

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• Default Value: false
• Added In: Hive 0.8.1 with HIVE-2181
• Fixed In:  Hive 1.3.0 with HIVE-10415

To cleanup the Hive scratch directory while starting the Hive server.

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