Thanks for the comments, Claudio and Avery. I will work on it.

On Tue, Apr 17, 2012 at 2:35 PM, Avery Ching (Assigned) (JIRA) <
j...@apache.org> wrote:

>
>     [
> https://issues.apache.org/jira/browse/GIRAPH-185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel]
>
> Avery Ching reassigned GIRAPH-185:
> ----------------------------------
>
>    Assignee: Bo Wang
>
> > Improve concurrency of putMsg / putMsgList
> > ------------------------------------------
> >
> >                 Key: GIRAPH-185
> >                 URL: https://issues.apache.org/jira/browse/GIRAPH-185
> >             Project: Giraph
> >          Issue Type: Improvement
> >          Components: graph
> >    Affects Versions: 0.2.0
> >            Reporter: Bo Wang
> >            Assignee: Bo Wang
> >             Fix For: 0.2.0
> >
> >   Original Estimate: 2h
> >  Remaining Estimate: 2h
> >
> > Currently in putMsg / putMsgList, a synchronized closure is used to
> protect the whole transientInMessages when adding the new message. This
> lock prevents other concurrent calls to putMsg/putMsgList and increases the
> response time. We should use fine-grain locks to allow high concurrency in
> message communication.
>
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