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From "Sankar Hariappan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-18824) ValidWriteIdList config should be defined on tables which has to collect stats after insert.
Date Thu, 01 Mar 2018 05:36:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16381547#comment-16381547
] 

Sankar Hariappan commented on HIVE-18824:
-----------------------------------------

Yes, the patch looks good to me as well.

> ValidWriteIdList config should be defined on tables which has to collect stats after
insert.
> --------------------------------------------------------------------------------------------
>
>                 Key: HIVE-18824
>                 URL: https://issues.apache.org/jira/browse/HIVE-18824
>             Project: Hive
>          Issue Type: Sub-task
>          Components: HiveServer2, Transactions
>    Affects Versions: 3.0.0
>            Reporter: Sankar Hariappan
>            Assignee: Sergey Shelukhin
>            Priority: Major
>              Labels: ACID, isolation
>             Fix For: 3.0.0
>
>         Attachments: HIVE-18824.patch
>
>
> In HIVE-18192 , per table write ID was introduced where snapshot isolation is built
using ValidWriteIdList on tables which are read with in a txn. ReadEntity list is referred
to decide which table is read within a txn.
> For insert operation, table will be found only in WriteEntity, but the table is read
to collect stats.
> So, it is needed to build the ValidWriteIdList for tables/partition part of WriteEntity
as well.



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