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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:
-----------------------------------
Description:
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.
NO PRECOMMIT TESTS
was:
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.
> 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-4914.01.patch, 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.
> NO PRECOMMIT TESTS
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