[jira] [Commented] (SPARK-20389) Upgrade kryo to fix NegativeArraySizeException

["Louis Bergelson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-20389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16016305#comment-16016305 ] 

Louis Bergelson commented on SPARK-20389:
-----------------------------------------

What's the process for evaluating the effect on spark apps?  As far as I can tell the changes from 3->4 will mean that data serialized with an older version of kryo will not be loadable by a new version of kryo unless you run with a compatibility option configured.  Hopefully most apps aren't storing data that's been serialized by kryo and only using it for serialization between processes.  I don't know if this has knock on effects for things like parquet though, does it use kryo?   

We have a recurrent issue when serializing large objects that is fixed in kryo 4 and would really like to see spark updated.

> Upgrade kryo to fix NegativeArraySizeException
> ----------------------------------------------
>
>                 Key: SPARK-20389
>                 URL: https://issues.apache.org/jira/browse/SPARK-20389
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core, Spark Submit
>    Affects Versions: 2.1.0
>         Environment: Linux, Centos7, jdk8
>            Reporter: Georg Heiler
>
> I am experiencing an issue with Kryo when writing parquet files. Similar to https://github.com/broadinstitute/gatk/issues/1524 a NegativeArraySizeException occurs. Apparently this is fixed in a current Kryo version. Spark is still using the very old 3.3 Kryo. 
> Can you please upgrade to a fixed Kryo version.



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