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Posted to issues@spark.apache.org by "Michael Armbrust (JIRA)" <ji...@apache.org> on 2015/03/18 03:33:38 UTC
[jira] [Resolved] (SPARK-5404) Statistic of Logical Plan is too
aggresive
[ https://issues.apache.org/jira/browse/SPARK-5404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Armbrust resolved SPARK-5404.
-------------------------------------
Resolution: Fixed
Fix Version/s: 1.4.0
Issue resolved by pull request 4914
[https://github.com/apache/spark/pull/4914]
> Statistic of Logical Plan is too aggresive
> ------------------------------------------
>
> Key: SPARK-5404
> URL: https://issues.apache.org/jira/browse/SPARK-5404
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Cheng Hao
> Fix For: 1.4.0
>
>
> The statistic number of a logical plan is quite helpful while do optimization like join reordering, however, the default algorithm is too aggressive, which probably lead to a totally wrong join order.
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