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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/02/02 00:22:39 UTC
[jira] [Commented] (SPARK-13121) java mapWithState mishandles scala
Option
[ https://issues.apache.org/jira/browse/SPARK-13121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15127234#comment-15127234 ]
Apache Spark commented on SPARK-13121:
--------------------------------------
User 'gabrielenizzoli' has created a pull request for this issue:
https://github.com/apache/spark/pull/11007
> java mapWithState mishandles scala Option
> -----------------------------------------
>
> Key: SPARK-13121
> URL: https://issues.apache.org/jira/browse/SPARK-13121
> Project: Spark
> Issue Type: Bug
> Components: Java API, Streaming
> Affects Versions: 1.6.0
> Reporter: Gabriele Nizzoli
> Priority: Critical
>
> in Spark Streaming, java mapWithState that uses Function3 has a bug in the convertion from a scala Option to a java Optional. In the conversion, the code in `StateSpec.scala`, line 222 is
> `Optional.fromNullable(v.get)`. This fails if `v`, an `Option`, is `None`, better to use `JavaUtils.optionToOptional(v)` instead.
> Workaround is to use the Function4 call to mapWithState. This call has the right conversion.
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