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https://issues.apache.org/jira/browse/HIVE-4914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Shelukhin updated HIVE-4914:
-----------------------------------
Attachment: HIVE-4914.patch
I have moved handling LIKE pushdown into separate JIRA because it takes
inordinate amount of pain and delays this needlessly.
Virtual columns issue was also fixed in a separate JIRA (it caused ppd_vc to
fail in the last run in this one).
Now it should work.
Note that new client cannot talk to old metastore server because API is not
available... I am not certain whether backward compat of that sort is needed, I
can add it by re-adding some old code in deprecated form.
RB also updated. Most of the patch is still generated code.
> filtering via partition name should be done inside metastore server
> (implementation)
> ------------------------------------------------------------------------------------
>
> Key: HIVE-4914
> URL: https://issues.apache.org/jira/browse/HIVE-4914
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-4914-only-no-gen.patch, HIVE-4914-only.patch,
> HIVE-4914.patch, HIVE-4914.patch, HIVE-4914.patch
>
>
> Currently, if the filter pushdown is impossible (which is most cases), the
> client gets all partition names from metastore, filters them, and asks for
> partitions by names for the filtered set.
> Metastore server code should do that instead; it should check if pushdown is
> possible and do it if so; otherwise it should do name-based filtering.
> Saves the roundtrip with all partition names from the server to client, and
> also removes the need to have pushdown viability checking on both sides.
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