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Posted to issues-all@impala.apache.org by "GAbor Bilicz (Jira)" <ji...@apache.org> on 2022/05/10 15:39:00 UTC
[jira] [Commented] (IMPALA-2830) Partition/tablet statistics for Kudu tables
[ https://issues.apache.org/jira/browse/IMPALA-2830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17534418#comment-17534418 ]
GAbor Bilicz commented on IMPALA-2830:
--------------------------------------
[~mjacobs] mipact of not having this, that the compute stats runs for 30 mins, but just for the last partition it would take just 2-5 minutes max.
> Partition/tablet statistics for Kudu tables
> -------------------------------------------
>
> Key: IMPALA-2830
> URL: https://issues.apache.org/jira/browse/IMPALA-2830
> Project: IMPALA
> Issue Type: New Feature
> Components: Frontend
> Affects Versions: Kudu_Impala
> Reporter: Mike Percy
> Priority: Major
> Labels: kudu
>
> Right now you can run COMPUTE STATS for Kudu tables to compute table/column stats, but it doesn't support stats for partitions/tablets. With such statistics we could consider other planner improvements.
> The 'show table stats' command shows the lack of tablet statistics, though this isn't useful:
> {code}
> > compute stats foo;
> > show table stats foo;
> +--------+-----------+----------+-----------------------------------------+------------+
> | # Rows | Start Key | Stop Key | Leader Replica | # Replicas |
> +--------+-----------+----------+-----------------------------------------+------------+
> | -1 | | 00000001 | foo1.example.com:7050 | 1 |
> | -1 | 00000001 | 00000002 | foo2.example.com.net:7050 | 1 |
> | -1 | 00000002 | 00000003 | foo3.example.com:7050 | 1 |
> {code}
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