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From "Vaibhav Gumashta (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-21164) ACID: explore how we can avoid a move step during inserts/compaction
Date Tue, 16 Apr 2019 21:45:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-21164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16819525#comment-16819525
] 

Vaibhav Gumashta commented on HIVE-21164:
-----------------------------------------

Found a bunch of issues in the initial patch; will fix and reupload.

> ACID: explore how we can avoid a move step during inserts/compaction
> --------------------------------------------------------------------
>
>                 Key: HIVE-21164
>                 URL: https://issues.apache.org/jira/browse/HIVE-21164
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 3.1.1
>            Reporter: Vaibhav Gumashta
>            Assignee: Vaibhav Gumashta
>            Priority: Major
>
> Currently, we write compacted data to a temporary location and then move the files to
a final location, which is an expensive operation on some cloud file systems. Since HIVE-20823
is already in, it can control the visibility of compacted data for the readers. Therefore,
we can perhaps avoid writing data to a temporary location and directly write compacted data
to the intended final path.



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