Davies Liu created SPARK-11737:
----------------------------------

             Summary: String may not be serialized correctly with Kyro
                 Key: SPARK-11737
                 URL: https://issues.apache.org/jira/browse/SPARK-11737
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 1.5.1, 1.6.0
            Reporter: Davies Liu
            Assignee: Davies Liu
            Priority: Critical


When run in cluster mode, the driver may have different memory (and configs) 
than executor, also if Kyro is used, then string can not be collected back to 
driver:

{code}
>>> sqlContext.range(10).selectExpr("repeat(cast(id as string), 9)").show()
+----------------------------+
|repeat(cast(id as string),9)|
+----------------------------+
|                       0|
|                       1|
|                       2|
|                       3|
|                       4|
|                       5|
|                       6|
|                       7|
|                       8|
|                       9|
+----------------------------+
{code}



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