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From "Stephan Ewen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1959) Accumulators BROKEN after Partitioning
Date Tue, 12 May 2015 20:02:59 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540610#comment-14540610

Stephan Ewen commented on FLINK-1959:

Great debugging, this is perfect!

I will prepare a fix based on that...

> Accumulators BROKEN after Partitioning
> --------------------------------------
>                 Key: FLINK-1959
>                 URL: https://issues.apache.org/jira/browse/FLINK-1959
>             Project: Flink
>          Issue Type: Bug
>          Components: Examples
>    Affects Versions: master
>            Reporter: mustafa elbehery
>            Priority: Critical
>             Fix For: master
> while running the Accumulator example in https://github.com/Elbehery/flink/blob/master/flink-examples/flink-java-examples/src/main/java/org/apache/flink/examples/java/relational/EmptyFieldsCountAccumulator.java,

> I tried to alter the data flow with "PartitionByHash" function before applying "Filter",
and the resulted accumulator was NULL. 
> By Debugging, I could see the accumulator in the RunTime Map. However, by retrieving
the accumulator from the JobExecutionResult object, it was NULL. 
> The line caused the problem is "file.partitionByHash(1).filter(new EmptyFieldFilter())"
instead of "file.filter(new EmptyFieldFilter())"

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