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https://issues.apache.org/jira/browse/HIVE-23721?focusedWorklogId=477545&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-477545
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ASF GitHub Bot logged work on HIVE-23721:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 02/Sep/20 00:41
Start Date: 02/Sep/20 00:41
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on pull request #1202:
URL: https://github.com/apache/hive/pull/1202#issuecomment-685209535
This pull request has been automatically marked as stale because it has not
had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the d...@hive.apache.org list if the patch is in
need of reviews.
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Issue Time Tracking
-------------------
Worklog Id: (was: 477545)
Time Spent: 0.5h (was: 20m)
> MetaStoreDirectSql.ensureDbInit() need to optimize QuerySQL
> -----------------------------------------------------------
>
> Key: HIVE-23721
> URL: https://issues.apache.org/jira/browse/HIVE-23721
> Project: Hive
> Issue Type: Bug
> Affects Versions: 4.0.0, 3.1.2
> Environment: Hadoop 3.1（1700+ nodes）
> YARN 3.1 （with timelineserver enabled，https enabled)
> Hive 3.1 (15 HS2 instance)
> 60000+ YARN Applications every day
> Reporter: YulongZ
> Assignee: zhangbutao
> Priority: Critical
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Attachments: HIVE-23721.01.patch
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> From Hive3.0，catalog added to hivemeta，many schema of metastore added column
> “catName”，and index for table added column “catName”。
> In MetaStoreDirectSql.ensureDbInit() ，two queries below
> “
> initQueries.add(pm.newQuery(MTableColumnStatistics.class, "dbName ==
> ''"));
> initQueries.add(pm.newQuery(MPartitionColumnStatistics.class, "dbName
> == ''"));
> ”
> should use "catName == ''" instead of "dbName == ''"，because “catName” is the
> first index column。
> When data of metastore become large，for example， table of
> MPartitionColumnStatistics have millions of lines。The
> “newQuery(MPartitionColumnStatistics.class, "dbName == ''")” for metastore
> executed very slowly，and the query “show tables“ for hiveserver2 executed
> very slowly too。
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