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Posted to issues@spark.apache.org by "Naveen Pishe (JIRA)" <ji...@apache.org> on 2016/06/20 17:32:05 UTC

[jira] [Updated] (SPARK-16072) Map operation on JavaPairDStream throws Task not serializable Exception

     [ https://issues.apache.org/jira/browse/SPARK-16072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Naveen Pishe updated SPARK-16072:
---------------------------------
    Affects Version/s:     (was: 1.4.0)
                           (was: 1.3.0)
                       1.6.0
                       1.6.1

> Map operation on JavaPairDStream throws  Task not serializable Exception
> ------------------------------------------------------------------------
>
>                 Key: SPARK-16072
>                 URL: https://issues.apache.org/jira/browse/SPARK-16072
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.5.0, 1.6.0, 1.6.1
>            Reporter: Naveen Pishe
>              Labels: Sequence, header, metadata, sequencefile
>
> There is requirement to save "user-defined" Metadata as part of Sequence File "Header" using Spark. 
> To write a User-defined metadata as part of Sequence File using regular Hadoop API's I pass the metadata object to SequenceFile.Writer constructor which when creates a SequenceFile ensures the metadata is part of the sequence file header.
> Currently Spark's JavaPairRDD Api provides methods to save an RDD to an SequenceFile format, but I don't see any API which can either give the SequenceFile.writer or a method where in I can pass the user-defined metadata so as to be written as part of sequence file header.
> The enhancement request an API to implement the same



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