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Posted to issues@hive.apache.org by "Yu-Wen Lai (Jira)" <ji...@apache.org> on 2020/07/23 01:09:00 UTC

[jira] [Assigned] (HIVE-23901) Overhead of Logger in ColumnStatsMerger damage the performance

     [ https://issues.apache.org/jira/browse/HIVE-23901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yu-Wen Lai reassigned HIVE-23901:
---------------------------------


> Overhead of Logger in ColumnStatsMerger damage the performance
> --------------------------------------------------------------
>
>                 Key: HIVE-23901
>                 URL: https://issues.apache.org/jira/browse/HIVE-23901
>             Project: Hive
>          Issue Type: Improvement
>          Components: Standalone Metastore, Statistics
>            Reporter: Yu-Wen Lai
>            Assignee: Yu-Wen Lai
>            Priority: Major
>
> When aggregating the column stats for a big partitioned table, we observed a large proportion of time spent in getLogger().  If we declare it as static, the execution time of aggregate can be greatly improved.



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