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From "Eli Reisman (JIRA)" <>
Subject [jira] [Commented] (GIRAPH-304) Closed channels between workers
Date Fri, 17 Aug 2012 23:47:37 GMT


Eli Reisman commented on GIRAPH-304:

We are routinely able to run 4 figures of workers here without problems, we see connection
errors only after the netty buffers or worker memory in general got overwhelmed and crashed,
and is trying to restart. Funny that you guys would get this error at such a low number of
workers. How far into the job does this happen?

> Closed channels between workers
> -------------------------------
>                 Key: GIRAPH-304
>                 URL:
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Alessandro Presta
>            Assignee: Alessandro Presta
> With GIRAPH-300 we are able to complete jobs with higher numbers of workers thanks to
retrying failed connections. However, we still observe ClosedChannelException with more than
a 100 workers.
> The patch also introduces a default TCP backlog of 100, so we should probably set this
dynamically to equal the number of workers instead.

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