Lakshmi Praveena created SPARK-26699:
----------------------------------------

             Summary: Dataset column discrepancies between Parquet 
                 Key: SPARK-26699
                 URL: https://issues.apache.org/jira/browse/SPARK-26699
             Project: Spark
          Issue Type: Bug
          Components: Input/Output
    Affects Versions: 2.3.2
            Reporter: Lakshmi Praveena


Hi,

 

When i run my job in Local mode with same parquet input files, the output is -

 

locations
--------------------
[[[true, [[, phys...
[[[true, [[, phys...
[[[true, [[, phys...
 null
[[[true, [[, phys...
[[[true, [[, phys...
[[[true, [[, phys...
[[[true, [[, phys...
[[[true, [[, phys...
[[[true, [[, phys...

 

But when i run the same code base with same input parquet files in the YARN 
cluster mode, my output is as below -

--------------------
 locations
--------------------
[*WrappedArray*([tr...
[*WrappedArray*([tr...
[WrappedArray([tr...
 null
[WrappedArray([tr...
[WrappedArray([tr...
[WrappedArray([tr...
[WrappedArray([tr...
[WrappedArray([tr...
[WrappedArray([tr...

Its appending WrappedArray :(

I am using Apache Spark 2.3.2 version and the EMR Version while cluster is 
5.19.0. What could be the reason for discrepancies in the output of certain 
Table columns ?



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