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Posted to issues@spark.apache.org by "Pierre Borckmans (JIRA)" <ji...@apache.org> on 2015/01/28 11:43:34 UTC

[jira] [Created] (SPARK-5454) [SQL] Self join with ArrayType columns problems

Pierre Borckmans created SPARK-5454:
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             Summary: [SQL] Self join with ArrayType columns problems
                 Key: SPARK-5454
                 URL: https://issues.apache.org/jira/browse/SPARK-5454
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 1.2.0
            Reporter: Pierre Borckmans


Weird behaviour when performing self join on a table with some ArrayType field.  (potential bug ?) 

I have set up a minimal non working example here: 
https://gist.github.com/pierre-borckmans/4853cd6d0b2f2388bf4f

In a nutshell, if the ArrayType column used for the pivot is created manually in the StructType definition, everything works as expected. 
However, if the ArrayType pivot column is obtained by a sql query (be it by using a "array" wrapper, or using a collect_list operator for instance), then results are completely off. 




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