[jira] [Resolved] (SPARK-18572) Use the hive client method "getPartitionNames" to answer "SHOW PARTITIONS" queries on partitioned Hive tables

["Wenchen Fan (JIRA)" <ji...@apache.org>]

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

Wenchen Fan resolved SPARK-18572.
---------------------------------
       Resolution: Fixed
         Assignee: Michael Allman
    Fix Version/s: 2.1.0

> 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: Michael Allman
>             Fix For: 2.1.0
>
>
> 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.



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