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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9850) Add a string to the print method to identify output for DataStream
Date Thu, 19 Jul 2018 02:55:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16548718#comment-16548718
] 

ASF GitHub Bot commented on FLINK-9850:
---------------------------------------

Github user hequn8128 commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6367#discussion_r203588835
  
    --- Diff: flink-streaming-scala/src/main/scala/org/apache/flink/streaming/api/scala/DataStream.scala
---
    @@ -959,6 +959,29 @@ class DataStream[T](stream: JavaStream[T]) {
       @PublicEvolving
       def printToErr() = stream.printToErr()
     
    +  /**
    +    * Writes a DataStream to the standard output stream (stdout). For each
    +    * element of the DataStream the result of .toString is
    --- End diff --
    
    .toString => [[AnyRef.toString()]]


> Add a string to the print method to identify output for DataStream
> ------------------------------------------------------------------
>
>                 Key: FLINK-9850
>                 URL: https://issues.apache.org/jira/browse/FLINK-9850
>             Project: Flink
>          Issue Type: New Feature
>          Components: DataStream API
>            Reporter: Hequn Cheng
>            Assignee: vinoyang
>            Priority: Major
>              Labels: pull-request-available
>
> The output of the print method of {[DataSet}} allows the user to supply a String to identify
the output(see [FLINK-1486|https://issues.apache.org/jira/browse/FLINK-1486]). But {[DataStream}}
doesn't support now. It is valuable to add this feature for {{DataStream}}



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