[
https://issues.apache.org/jira/browse/HIVE-21164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16881886#comment-16881886
]
Vaibhav Gumashta commented on HIVE-21164:
-----------------------------------------
[~gopalv] I think this is good for a review now (pending test run: but I've
fixed a bunch of issues from the previous run and verified locally). Union +
multi file spray (more buckets than reducers case) might need another look, but
I'll wait for test run and go from there. Review board linked to the jira.
Thanks!
> 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
> Attachments: HIVE-21164.1.patch, HIVE-21164.2.patch,
> HIVE-21164.3.patch, HIVE-21164.4.patch, HIVE-21164.5.patch, HIVE-21164.6.patch
>
>
> 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.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
