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Posted to issues@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2020/12/21 17:46:00 UTC

[jira] [Resolved] (IMPALA-5726) Impala Planning time on Kudu table is much longer than HDFS table

     [ https://issues.apache.org/jira/browse/IMPALA-5726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Armstrong resolved IMPALA-5726.
-----------------------------------
    Resolution: Cannot Reproduce

Not really enough info. IMPALA-9903 is something that improved Kudu planning time.

> Impala Planning time on Kudu table is much longer than HDFS table
> -----------------------------------------------------------------
>
>                 Key: IMPALA-5726
>                 URL: https://issues.apache.org/jira/browse/IMPALA-5726
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Frontend
>    Affects Versions: Impala 2.8.0
>            Reporter: Alan Choi
>            Priority: Major
>              Labels: kudu
>
> The query planning time for Kudu table is much longer than HDFS table. In a query that "union all" 38 Kudu tables (i.e. select * from kudu_table union all select * from... union all select * from kudu_table), the planning time took 1.2sec. When switched to HDFS table, the planning time is way less.



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