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https://issues.apache.org/jira/browse/HIVE-21209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16759929#comment-16759929
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Naveen Gangam commented on HIVE-21209:
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[~ashutoshc] [~pvary] [~thejas] A request for improvement from a real customer.
Just wanted to file the request so we could evaluate this. THanks
> [Improvement] Exchange partitition to be metadata only change?
> --------------------------------------------------------------
>
> Key: HIVE-21209
> URL: https://issues.apache.org/jira/browse/HIVE-21209
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Affects Versions: 2.1.1
> Reporter: Naveen Gangam
> Priority: Minor
>
> https://issues.apache.org/jira/browse/HIVE-14560
> Current implementation of the above jira is a metadata and a "copy" of the
> partition data on the DFS. Could possibly take a long time to copy the data
> for large partition data especially different storage clusters. When
> exchanging a partition from a HDFS to S3a or vice versa the data is copied
> and this is client copy operation and it can be very slow if the partition is
> very large.
> The customer would like the "exchange partition" operation to purely
> metadata. I would like to start a discussion on whether this improvement is
> to be made. Obviously, the current behavior will be supported but and option
> for it to be a metadata operation only needs to be evaluated.
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