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Date: Mon, 24 Sep 2012 11:07:40 -0700
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Subject: Re: [jira] [Commented] (GIRAPH-293) Should aggregators be
 checkpointed?
From: Eli Reisman <apache.mailbox@gmail.com>
To: dev@giraph.apache.org
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Sorry I ended up out of the loop this week, sounds good to me too!


On Wed, Sep 19, 2012 at 4:25 PM, Avery Ching (JIRA) <jira@apache.org> wrote:

>
>     [
> https://issues.apache.org/jira/browse/GIRAPH-293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13459210#comment-13459210]
>
> Avery Ching commented on GIRAPH-293:
> ------------------------------------
>
> +1.  This is Any objections Eli?
>
> > Should aggregators be checkpointed?
> > -----------------------------------
> >
> >                 Key: GIRAPH-293
> >                 URL: https://issues.apache.org/jira/browse/GIRAPH-293
> >             Project: Giraph
> >          Issue Type: Bug
> >            Reporter: Alessandro Presta
> >            Assignee: Maja Kabiljo
> >         Attachments: GIRAPH-293.patch, GIRAPH-293.patch,
> GIRAPH-293.patch, GIRAPH-293.patch
> >
> >
> > 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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