[jira] [Resolved] (SPARK-13121) java mapWithState mishandles scala Option

["Shixiong Zhu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-13121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shixiong Zhu resolved SPARK-13121.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 2.0.0

> 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
>             Fix For: 1.6.1, 2.0.0
>
>
> 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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