Mahadevan Sudarsanan created PARQUET-647:
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Summary: Null Pointer Exception in Hive upon reading Parquet
Key: PARQUET-647
URL: https://issues.apache.org/jira/browse/PARQUET-647
Project: Parquet
Issue Type: Bug
Components: parquet-format, parquet-mr
Affects Versions: 1.6.0
Environment: Hadoop 2.6
Hive 0.14
Parquet 1.6
SPARK 1.6.1
Scala 2.11
Reporter: Mahadevan Sudarsanan
Priority: Blocker
When I write Parquet files from Spark Job, and try to read it in Hive as an
External Table , I get Null Pointer Exception. After further analysis , I found
I had some Null values in my transformation(used Dataset and DataFrame API's)
before saving to parquet. These 2 fields which contains NULL are float data
types. When I removed these two columns from the parquet datasets, I was able
to read it in hive. Contrastingly , with all NULL columns I was able to read it
Hive when I write my job to ORC format.
When a datatype is anything other than String , which is completely empty(NULL)
written in parquet is not been able to read by Hive and throws NP Exception.
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