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Posted to dev@giraph.apache.org by "Sebastian Schelter (Updated) (JIRA)" <ji...@apache.org> on 2011/12/17 12:16:30 UTC

[jira] [Updated] (GIRAPH-105) BspServiceMaster.checkWorkers() should return empty lists instead of null

     [ https://issues.apache.org/jira/browse/GIRAPH-105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebastian Schelter updated GIRAPH-105:
--------------------------------------

    Attachment: GIRAPH-105.patch
    
> BspServiceMaster.checkWorkers() should return empty lists instead of null
> -------------------------------------------------------------------------
>
>                 Key: GIRAPH-105
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-105
>             Project: Giraph
>          Issue Type: Bug
>    Affects Versions: 0.70.0
>            Reporter: Sebastian Schelter
>            Priority: Minor
>         Attachments: GIRAPH-105.patch
>
>
> BspServiceMaster.checkWorkers() is invoked in BspServiceMaster.coordinateSuperstep() and in BspServiceMaster.createInputSplits(). Both check for an empty list to fail the job in case something has gone wrong. However, checkWorkers() returns null in case of problems, causing an NPE in the calling code.

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