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Posted to issues@impala.apache.org by "Qifan Chen (Jira)" <ji...@apache.org> on 2021/06/22 22:41:00 UTC
[jira] [Created] (IMPALA-10763) Min/max filters should be enabled
on Z-order sorted columns
Qifan Chen created IMPALA-10763:
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Summary: Min/max filters should be enabled on Z-order sorted columns
Key: IMPALA-10763
URL: https://issues.apache.org/jira/browse/IMPALA-10763
Project: IMPALA
Issue Type: Test
Reporter: Qifan Chen
Currently, min/max filters are enabled for lexically sorted columns (please refer to
IMPALA-10709: Min/max filters should be enabled for joins on sorted columns in Parquet tables) with a limitation that only the leading sorted columns are assigned with min/max filters. Non-leading sorted columns will be ignored.
To effectively handle multiple sort columns, Impala offers an alternative sort order called Z-order. Z-order sorts these columns in multi-dimension into a sequence of values such that the locality of the data points are preserved.
The purpose of this JIRA is to integrate the min/max filter feature with a table with Z-order sorted columns.
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