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From "Alessandro Presta (JIRA)" <j...@apache.org>
Subject [jira] [Created] (GIRAPH-293) Should aggregators be checkpointed?
Date Wed, 08 Aug 2012 13:44:21 GMT
Alessandro Presta created GIRAPH-293:
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             Summary: Should aggregators be checkpointed?
                 Key: GIRAPH-293
                 URL: https://issues.apache.org/jira/browse/GIRAPH-293
             Project: Giraph
          Issue Type: Bug
            Reporter: Alessandro Presta


As I understand, we don't include aggregators in checkpoints because they are kept in the
Zookeeper.

One of our bootcampers is working on fixing TestManualCheckpoint, which currently involves
starting a new job from a checkpoint from a previous job*.
If this is a functionality we want going forward, then persistent aggregators should be checkpointed.


[*] That test relies on the fact that either aggregators are checkpointed or they are always
reset at each superstep. None of these is happening, but the error cancels out with the fact
that we are not actually resuming from a checkpoint, but re-running the job from scratch.

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