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From Micah Whitacre <mkwhita...@gmail.com>
Subject Re: Spark accumulators
Date Thu, 03 Sep 2015 12:49:43 GMT
Nithin logged https://issues.apache.org/jira/browse/CRUNCH-558 to track
this work.  Also added a patch for the change you proposed, want to try it
out and see if that works for you?

On Thu, Sep 3, 2015 at 7:25 AM, Nithin Asokan <anithin19@gmail.com> wrote:

> We are currently testing a few capabilities using Spark and one thing we
> noticed in Spark is they don't list any user defined accumulators on web
> UI.
>
> On MapReduce I would imagine counters being displayed on the job page,
> however on a SparkPipeline I was only able to pull counter information from
> PipelineResult#getStageResult().
>
> I think the reason these accumulators are not visible on web UI is because
> crunch does not name these accumulators. Spark expects an accumulator to
> have a name to be visible on the UI.
>
>
> https://github.com/apache/crunch/blob/apache-crunch-0.13.0/crunch-spark/src/main/java/org/apache/crunch/impl/spark/SparkRuntime.java#L125-L126
>
>
> https://github.com/apache/spark/blob/v1.4.1/core/src/main/scala/org/apache/spark/api/java/JavaSparkContext.scala#L616-L624
(accumulator
> API with Name)
>
> I would like to know if it's possible in crunch to name these accumulators
> so they are available in web UI. This will give us an experience where
> users can monitor/watch accumulators from web UI to obtain key information
> about their jobs.
>
> Thanks,
> Nithin
>

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