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https://issues.apache.org/jira/browse/HIVE-22046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated HIVE-22046:
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Comment: was deleted
(was: Patch is still missing changes in SQL scripts except for Derby
initialization.)
> Differentiate among column stats computed by different engines
> --------------------------------------------------------------
>
> Key: HIVE-22046
> URL: https://issues.apache.org/jira/browse/HIVE-22046
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Attachments: HIVE-22046.01.patch, HIVE-22046.patch
>
>
> The goal is to avoid computation of column stats by engines to step on each
> other, e.g., Hive and Impala. In longer term, we may introduce a common
> representation for the column statistics stored by different engines.
> For this issue, we will add a new column 'engine' to TAB_COL_STATS HMS table
> (unpartitioned tables) and to PART_COL_STATS HMS table (partitioned tables).
> This will prevent conflicts at the column level stats.
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