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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-18572) Use the hive client method "getPartitionNames" to answer "SHOW PARTITIONS" queries on partitioned Hive tables
Date Wed, 23 Nov 2016 22:22:59 GMT

     [ https://issues.apache.org/jira/browse/SPARK-18572?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-18572:
------------------------------------

    Assignee: Apache Spark

> Use the hive client method "getPartitionNames" to answer "SHOW PARTITIONS" queries on
partitioned Hive tables
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-18572
>                 URL: https://issues.apache.org/jira/browse/SPARK-18572
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Michael Allman
>            Assignee: Apache Spark
>
> Currently Spark answers the {{SHOW PARTITIONS}} query by fetching all of the table's
partition metadata from the external catalog and constructing partition names therefrom. The
Hive client has a {{getPartitionNames}} method which is orders of magnitude faster, with the
performance improvement scaling up with the number of partitions in the table. I believe we
can use this method to great effect.
> Further details are provided in the associated PR (coming shortly).



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