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From "Greg Hogan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-3978) Add containsBroadcastVariable method to RuntimeContext
Date Thu, 26 May 2016 16:19:13 GMT

     [ https://issues.apache.org/jira/browse/FLINK-3978?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Greg Hogan updated FLINK-3978:
    Summary: Add containsBroadcastVariable method to RuntimeContext  (was: Add containsBroadcastVariable
methods to RuntimeContext)

> Add containsBroadcastVariable 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
> 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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