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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXCORE-413) Collision between Sink.getCount() and SweepableReservoir.getCount()
Date Tue, 12 Apr 2016 04:58:25 GMT

    [ https://issues.apache.org/jira/browse/APEXCORE-413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15236587#comment-15236587
] 

ASF GitHub Bot commented on APEXCORE-413:
-----------------------------------------

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

    https://github.com/apache/incubator-apex-core/pull/301#discussion_r59320833
  
    --- Diff: engine/src/main/java/com/datatorrent/stram/stream/OiOStream.java ---
    @@ -29,11 +29,12 @@
      *
      * @since 0.3.5
      */
    -public class OiOStream implements Stream, SweepableReservoir
    --- End diff --
    
    OiOStream has only one thread operating on it, why is there a need for separate counts
or issue with reset?


> Collision between Sink.getCount() and SweepableReservoir.getCount()
> -------------------------------------------------------------------
>
>                 Key: APEXCORE-413
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-413
>             Project: Apache Apex Core
>          Issue Type: Bug
>    Affects Versions: 3.2.0, 3.3.0
>            Reporter: Vlad Rozov
>            Assignee: Vlad Rozov
>             Fix For: 3.4.0
>
>
> SweepableReservoir.getCount() and Sink.getCount() are two distinct counts as SweepableReservoir.getCount()
returns number of tuples consumed/poll from the reservoir by an operator since the last reset,
while Sink.getCount() returns number of tuples pushed into the sink since the last reset.
For InlineStream that implements both interfaces, it causes a conflict as a count of tuples
pushed into InlineStream is not necessarily equal to a count of tuples poll from it.



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