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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1885) Bulk mode for gelly
Date Tue, 12 May 2015 15:29:59 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540037#comment-14540037

ASF GitHub Bot commented on FLINK-1885:

Github user StephanEwen commented on the pull request:

    I had a look at this, and it actually looks quite good. The basic idea seems to be that
you emit the original vertex if no update happens.
    It would be nice to not have the `isLastCollected` flag in the user-facing classes. If
you could have a dedicated vertex-centric bulk coGroup, with its own output collector, you
can track this in the OutputCollector. I think that would be cleanrer with respect to the
user-facing API.
    Otherwise, I think this is a good addition...

> Bulk mode for gelly
> -------------------
>                 Key: FLINK-1885
>                 URL: https://issues.apache.org/jira/browse/FLINK-1885
>             Project: Flink
>          Issue Type: Improvement
>          Components: Gelly
>            Reporter: Markus Holzemer
>            Assignee: Markus Holzemer
>            Priority: Minor
> For my research I need to execute graph algorithm with delta iterations and with bulk
iterations. So I added an execution mode to gelly that executes the vertex centric iteration
with a bulk iteration.
> Since gelly normally keeps the whole graph in the solution set of the delta iteration,
it can only handle graphs that fit into the distributed memory of ones nodes (correct me if
I am wrong). So a bulk mode could also be usefull for handling graphs that do not fit in memory.

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