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

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

Yu-Wen Lai created HIVE-23901:
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             Summary: 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


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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