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From "Steve Yeom (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-18693) Snapshot Isolation does not work for Micromanaged table when a insert transaction is aborted
Date Fri, 16 Feb 2018 04:32:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16366597#comment-16366597
] 

Steve Yeom edited comment on HIVE-18693 at 2/16/18 4:31 AM:
------------------------------------------------------------

Eugene also mentioned possible bottleneck in Cleaner. 
If possible, we can introduce parallelism whereever possible, if 
it is better in performance. 


was (Author: steveyeom2017):
Eugene also mentioned possible bottleneck in Cleaner. 
If possible, we can introduce parallelism whereever possible. 

> Snapshot Isolation does not work for Micromanaged table when a insert transaction is
aborted
> --------------------------------------------------------------------------------------------
>
>                 Key: HIVE-18693
>                 URL: https://issues.apache.org/jira/browse/HIVE-18693
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>            Reporter: Steve Yeom
>            Assignee: Steve Yeom
>            Priority: Major
>         Attachments: HIVE-18693.01.patch
>
>
> TestTxnCommands2#writeBetweenWorkerAndCleaner with minor 
> changes (changing delete command to insert command) fails on MM table.
> Specifically the last SELECT commands returns wrong results. 
> But this test works fine with full ACID table. 



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