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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