You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hive.apache.org by "László Pintér (Jira)" <ji...@apache.org> on 2020/02/17 12:16:00 UTC
[jira] [Updated] (HIVE-21487) COMPLETED_COMPACTIONS and
COMPACTION_QUEUE table missing appropriate indexes
[ https://issues.apache.org/jira/browse/HIVE-21487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
László Pintér updated HIVE-21487:
---------------------------------
Attachment: HIVE-21487.03.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-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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)