Rajesh Balamohan created HIVE-23154:
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Summary: Fix race condition in Utilities::mvFileToFinalPath
Key: HIVE-23154
URL: https://issues.apache.org/jira/browse/HIVE-23154
Project: Hive
Issue Type: Improvement
Components: HiveServer2
Reporter: Rajesh Balamohan
Attachments: HIVE-23154.1.patch
Utilities::mvFileToFinalPath is used for moving files from "/_tmp.-ext to
"/-ext" folder. Tasks write data to "_tmp" . Before writing to final
destination, they are moved to "-ext" folder. As part of it, it has checks to
ensure that run-away task outputs are not copied to "-ext" folder.
Currently, there is a race condition between computing the snapshot of files to
be copied and the rename operation. Same issue persists in "insert into" case
as well.
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