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From Josh Wills <>
Subject Re: counters in multistage pipeline
Date Wed, 25 Mar 2015 20:26:25 GMT
My guess is yes, it's okay to just sum the results, but I'll double check
the code- I'm assuming the counts are different in the different

Nothing that does an automatic merge, but agree that it would be useful.
Post a patch? Maybe a new method on PipelineResult?
On Wed, Mar 25, 2015 at 10:01 AM Tycho Lamerigts <>

>  I have one DoFn that increments a counter (and a bunch of other DoFns
> that don’t use counters). When my DoFn with counter runs in a MRPipeline
> that returns multiple StageResults, I notice that my counter appears with a
> non-zero value in 2 StageResults. Is it correct to just sum up these
> values? Is there any utility class to this automatically for all counters
> in PipelineResult?
>  T
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