[jira] [Resolved] (PARQUET-647) Null Pointer Exception in Hive upon reading Parquet

["Ryan Blue (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PARQUET-647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ryan Blue resolved PARQUET-647.
-------------------------------
    Resolution: Not A Problem

> 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
>              Labels: hadoop, hive, nullpointerexception, parquet, spark
>         Attachments: Screen Shot 2016-06-24 at 11.01.46 AM.png, Screen Shot 2016-06-24 at 11.01.55 AM.png, Screen Shot 2016-06-24 at 11.02.50 AM.png, Screen Shot 2016-06-24 at 11.03.56 AM.png
>
>
> 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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