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From László Pintér (Jira) <j...@apache.org>
Subject [jira] [Updated] (HIVE-21487) COMPLETED_COMPACTIONS and COMPACTION_QUEUE table missing appropriate indexes
Date Tue, 25 Feb 2020 14:51:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-21487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

László Pintér updated HIVE-21487:
---------------------------------
    Attachment: HIVE-21487.06.patch

> COMPLETED_COMPACTIONS and COMPACTION_QUEUE table missing appropriate indexes
> ----------------------------------------------------------------------------
>
>                 Key: HIVE-21487
>                 URL: https://issues.apache.org/jira/browse/HIVE-21487
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 3.1.1
>            Reporter: Todd Lipcon
>            Assignee: László Pintér
>            Priority: Major
>         Attachments: HIVE-21487.03.patch, HIVE-21487.04.patch, HIVE-21487.05.patch, HIVE-21487.06.patch,
HIVE-21847.01.patch, HIVE-21847.02.patch
>
>
> Looking at a MySQL install where HMS is pointed on Hive 3.1, I see a constant stream
of queries of the form:
> {code}
> select CC_STATE from COMPLETED_COMPACTIONS where CC_DATABASE = 'tpcds_orc_exact_1000'
and CC_TABLE = 'catalog_returns' and CC_PARTITION = 'cr_returned_date_sk=2452851' and CC_STATE
!= 'a' order by CC_ID desc;
> {code}
> but the COMPLETED_COMPACTIONS table has no index. In this case it's resulting in a full
table scan over 115k rows, which takes around 100ms.



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