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https://issues.apache.org/jira/browse/FLINK-2223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15572799#comment-15572799
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Greg Hogan commented on FLINK-2223:
-----------------------------------
Is this still an issue?
> Web frontend shows wrong accumulator results for latest job
> -----------------------------------------------------------
>
> Key: FLINK-2223
> URL: https://issues.apache.org/jira/browse/FLINK-2223
> Project: Flink
> Issue Type: Bug
> Reporter: Till Rohrmann
> Priority: Minor
>
> The web frontend always displays for the latest finished job in the history
> that it has an accumulator with name {{JobID (SerializedListAccumulator)}}
> and value
> {{org.apache.flink.api.common.accumulators.SerializedListAccumulator}}. This
> seems to an artifact of the way we send accumulators via akka. Maybe the
> {{SerializedListAccumulator}} is always collected in the JobManager's
> {{AccumulatorManager}} no matter whether the job used accumulators or not.
> Then, this accumulator is returned to the web frontend as long as no other
> job was started.
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