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https://issues.apache.org/jira/browse/SPARK-11214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen resolved SPARK-11214.
--------------------------------
Resolution: Fixed
Fix Version/s: 1.5.1
It looks like we have fixed this issue in Spark 1.5.1, since your example
returns the correct answer on 1.5.1. Therefore, I'm going to mark this issue as
fixed in 1.5.1.
> Join with Unicode-String results wrong empty
> --------------------------------------------
>
> Key: SPARK-11214
> URL: https://issues.apache.org/jira/browse/SPARK-11214
> Project: Spark
> Issue Type: Bug
> Components: PySpark, SQL
> Affects Versions: 1.5.0
> Reporter: Hans Fischer
> Priority: Critical
> Fix For: 1.5.1
>
>
> I created a join that should clearly result in a single row but return:
> empty. Could someone validate this bug?
> hiveContext.sql('SELECT * FROM (SELECT "c" AS a) AS a JOIN (SELECT "c" AS b)
> AS b ON a.a = b.b').take(10)
> result: []
> kind regards
> Hans
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