Gabriele Nizzoli created SPARK-13121:
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Summary: 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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