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Posted to issues@spark.apache.org by "Mitesh (JIRA)" <ji...@apache.org> on 2016/07/07 15:37:11 UTC
[jira] [Updated] (SPARK-16419) EnsureRequirements adds extra Sort
to already sorted cached table
[ https://issues.apache.org/jira/browse/SPARK-16419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mitesh updated SPARK-16419:
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Description: EnsureRequirements compares the required and given sort ordering, but uses Scala equals instead of a semantic equals, so column capitalization isn't considered, and also fails for a cached table. This results in a SortMergeJoin of a cached already-sorted table to add an extra sort. (was: EnsureRequirements compared the required and given sort ordering, but uses Scala equals instead of a semantic equals, so column capitalization isn't considered.)
> EnsureRequirements adds extra Sort to already sorted cached table
> -----------------------------------------------------------------
>
> Key: SPARK-16419
> URL: https://issues.apache.org/jira/browse/SPARK-16419
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.6.2
> Reporter: Mitesh
> Priority: Minor
>
> EnsureRequirements compares the required and given sort ordering, but uses Scala equals instead of a semantic equals, so column capitalization isn't considered, and also fails for a cached table. This results in a SortMergeJoin of a cached already-sorted table to add an extra sort.
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