Hyunsik Choi created TAJO-951:
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Summary: Making good use of statistic of Parquet
Key: TAJO-951
URL: https://issues.apache.org/jira/browse/TAJO-951
Project: Tajo
Issue Type: Improvement
Components: storage
Reporter: Hyunsik Choi
Parquet already provides per-column statistics, including the number of null
values, min, and max value. It seems to be easily integrated with Tajo's
statistic system. Also, if query execution exploits it well, query performance
would be improved.
* Added statistics to Parquet pages and rowGroups
(https://github.com/Parquet/parquet-mr/commit/621cf4e92be3dd3f2dd1a92a8dd12f244a7d7be3)
*
https://git-wip-us.apache.org/repos/asf?p=incubator-parquet-mr.git;a=blob;f=parquet-column/src/main/java/parquet/column/statistics/Statistics.java;h=2c5ac14a262c69a9a6545243330bbc3a77812c9b;hb=HEAD
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