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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2016/11/02 05:32:58 UTC

[jira] [Updated] (SPARK-17868) Do not use bitmasks during parsing and analysis of CUBE/ROLLUP/GROUPING SETS

     [ https://issues.apache.org/jira/browse/SPARK-17868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin updated SPARK-17868:
--------------------------------
    Target Version/s: 2.2.0  (was: 2.1.0)

> Do not use bitmasks during parsing and analysis of CUBE/ROLLUP/GROUPING SETS
> ----------------------------------------------------------------------------
>
>                 Key: SPARK-17868
>                 URL: https://issues.apache.org/jira/browse/SPARK-17868
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Herman van Hovell
>
> We generate bitmasks for grouping sets during the parsing process, and use these during analysis. These bitmasks are difficult to work with in practice and have lead to numerous bugs. I suggest that we remove these and use actual sets instead, however we would need to generate these offsets for the grouping_id.



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