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Posted to issues@spark.apache.org by "Thomas Graves (JIRA)" <ji...@apache.org> on 2018/02/02 14:55:00 UTC
[jira] [Resolved] (SPARK-23304) Spark SQL coalesce() against hive
not working
[ https://issues.apache.org/jira/browse/SPARK-23304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thomas Graves resolved SPARK-23304.
-----------------------------------
Resolution: Invalid
> Spark SQL coalesce() against hive not working
> ---------------------------------------------
>
> Key: SPARK-23304
> URL: https://issues.apache.org/jira/browse/SPARK-23304
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.1, 2.3.0
> Reporter: Thomas Graves
> Assignee: Xiao Li
> Priority: Major
> Attachments: spark22_oldorc_explain.txt, spark23_oldorc_explain.txt, spark23_oldorc_explain_convermetastoreorcfalse.txt
>
>
> The query below seems to ignore the coalesce. This is running spark 2.2 or spark 2.3 against hive, which is reading orc:
>
> Query:
> spark.sql("SELECT COUNT(DISTINCT(something)) FROM sometable WHERE dt >= '20170301' AND dt <= '20170331' AND something IS NOT NULL").coalesce(160000).show()
>
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