Arun Suresh commented on GIRAPH-10:

wrt my previous comment, I meant Aggregators MUST be persisted at the end of 
EACH superstep rather than giving the user control over the frequency. One 
thought thought.. If we assume the Aggregator value is stored in the Zookeeper 
server reliably for the duration of the Job, why persist it in the first place. 
I guess the only reason would be that the actually artifact of interest after a 
Job has been run is the Aggregator value rather than the state of the Vertices.
> Aggregators are not exported
> ----------------------------
>                 Key: GIRAPH-10
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-10
>             Project: Giraph
>          Issue Type: New Feature
>            Reporter: Avery Ching
>            Priority: Minor
> Currently, aggregator values cannot be saved after a Giraph job.  There 
> should be a way to do this.

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