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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3978) Add hasBroadcastVariable method to RuntimeContext
Date Tue, 07 Jun 2016 12:41:21 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15318398#comment-15318398
] 

ASF GitHub Bot commented on FLINK-3978:
---------------------------------------

Github user greghogan commented on the issue:

    https://github.com/apache/flink/pull/2039
  
    This was closed in 5b0287971fa2beda360105d96e7bfbc7a110fae7


> Add hasBroadcastVariable method to RuntimeContext
> -------------------------------------------------
>
>                 Key: FLINK-3978
>                 URL: https://issues.apache.org/jira/browse/FLINK-3978
>             Project: Flink
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.1.0
>            Reporter: Greg Hogan
>            Assignee: Greg Hogan
>            Priority: Minor
>             Fix For: 1.1.0
>
>
> The javadocs for {{RuntimeContext}} state that {{getAccumulator}} "throws an exception
if the accumulator does not exist or if the accumulator exists, but with different type",
although {{AbstractRuntimeUDFContext}} does not throw an exception but will return null.
> The javadocs for {{getBroadcastVariable}} do not mention throwing an exception. Currently
the only way to handle a broadcast variable that that may or may not exist is to catch and
ignore the exception. Adding a  {{containsBroadcastVariable}} method to {{RuntimeContext}}
would make this explicit.



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