[jira] [Commented] (SPARK-4817) [streaming]Print the specified number of data and handle all of the elements in RDD

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-4817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14240928#comment-14240928 ] 

Apache Spark commented on SPARK-4817:
-------------------------------------

User 'surq' has created a pull request for this issue:
https://github.com/apache/spark/pull/3662

> [streaming]Print the specified number of data and handle all of the elements in RDD
> -----------------------------------------------------------------------------------
>
>                 Key: SPARK-4817
>                 URL: https://issues.apache.org/jira/browse/SPARK-4817
>             Project: Spark
>          Issue Type: New Feature
>          Components: Streaming
>            Reporter: 宿荣全
>            Priority: Minor
>
> Dstream.print function:Print 10 elements and handle 11 elements.
> A new function based on Dstream.print function is presented:
> the new function:
> Print the specified number of data and handle all of the elements in RDD.
> there is a work scene:
> val dstream = stream.map->filter->mapPartitions->print
> the data after filter need update database in mapPartitions,but don't need print each data,only need to print the top 20 for view the data processing.



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