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From "Aravind Anbudurai (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GIRAPH-270) Improve TestManualCheckpoint
Date Wed, 08 Aug 2012 15:20:20 GMT

     [ https://issues.apache.org/jira/browse/GIRAPH-270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aravind Anbudurai updated GIRAPH-270:
-------------------------------------

    Attachment: Improve_TestManualCheckpoint.patch

Manual Checkpointing test case.
                
> Improve TestManualCheckpoint
> ----------------------------
>
>                 Key: GIRAPH-270
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-270
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Alessandro Presta
>            Assignee: Aravind Anbudurai
>         Attachments: Improve_TestManualCheckpoint.patch
>
>
> A good test case for checkpointing is important as we experiment, for example, with storing
messages separately to enable out-of-core messaging.
> There are two problems with TestManualCheckpoint:
> - It's only checking that the sum of vertex ids is invariant. This doesn't guarantee
that we're correctly restoring vertex values, edges, and messages.
> - The "restarted job" seems to actually start from scratch, and overwrite the previous
job's checkpoints. What we are expecting, instead, is the restarted job to load the latest
checkpoint and start from there.

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