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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1977) Rework Stream Operators to always be push based
Date Thu, 07 May 2015 13:37:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14532620#comment-14532620
] 

ASF GitHub Bot commented on FLINK-1977:
---------------------------------------

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

    https://github.com/apache/flink/pull/659#discussion_r29851632
  
    --- Diff: flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/functions/source/SourceFunction.java
---
    @@ -36,9 +36,9 @@
     	/**
     	 * Main work method of the source. This function is invoked at the beginning of the
    --- End diff --
    
    Oversight on my part, and I forgot to rework the FileMonitoringFunction (a source)


> Rework Stream Operators to always be push based
> -----------------------------------------------
>
>                 Key: FLINK-1977
>                 URL: https://issues.apache.org/jira/browse/FLINK-1977
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: Aljoscha Krettek
>            Assignee: Aljoscha Krettek
>
> This is a result of the discussion on the mailing list. This is an excerpt from the mailing
list that gives the basic idea of the change:
> I propose to change all streaming operators to be push based, with a
> slightly improved interface: In addition to collect(), which I would
> call receiveElement() I would add receivePunctuation() and
> receiveBarrier(). The first operator in the chain would also get data
> from the outside invokable that reads from the input iterator and
> calls receiveElement() for the first operator in a chain.



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