Vineet Garg created HIVE-21279:
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Summary: Avoid moving/rename operation in FileSink op for SELECT
queries
Key: HIVE-21279
URL: https://issues.apache.org/jira/browse/HIVE-21279
Project: Hive
Issue Type: Improvement
Components: Query Planning
Reporter: Vineet Garg
Assignee: Vineet Garg
Fix For: 4.0.0
Attachments: HIVE-21279.1.patch
Currently at the end of a job FileSink operator moves/rename temp directory to
another directory from which FetchTask fetches result. This is done to avoid
fetching potential partial/invalid files by failed/runway tasks. This operation
is expensive for cloud storage. It could be avoided if FetchTask is passed on
set of files to read from instead of whole directory.
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