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Posted to dev@giraph.apache.org by "Eli Reisman (JIRA)" <ji...@apache.org> on 2012/08/07 23:00:21 UTC

[jira] [Updated] (GIRAPH-246) Periodic worker calls to context.progress() will prevent timeout on some Hadoop clusters during barrier waits

     [ https://issues.apache.org/jira/browse/GIRAPH-246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Reisman updated GIRAPH-246:
-------------------------------

    Attachment: GIRAPH-246-5.patch
    
> Periodic worker calls to context.progress() will prevent timeout on some Hadoop clusters during barrier waits
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: GIRAPH-246
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-246
>             Project: Giraph
>          Issue Type: Improvement
>          Components: bsp
>    Affects Versions: 0.2.0
>            Reporter: Eli Reisman
>            Assignee: Eli Reisman
>            Priority: Minor
>              Labels: hadoop, patch
>             Fix For: 0.2.0
>
>         Attachments: GIRAPH-246-1.patch, GIRAPH-246-2.patch, GIRAPH-246-3.patch, GIRAPH-246-4.patch, GIRAPH-246-5.patch
>
>
> This simple change creates a command-line configurable option in GiraphJob to control the time between calls to context().progress() that allows workers to avoid timeouts during long data load-ins in which some works complete their input split reads much faster than others, or finish a super step faster. I found this allowed jobs that were large-scale but with low memory overhead to complete even when they would previously time out during runs on a Hadoop cluster. Timeout is still possible when the worker crashes or runs out of memory or has other GC or RPC trouble that is legitimate, but prevents unintentional crashes when the worker is actually still healthy.

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