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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HAMA-199) Add fault tolerance to BSPPeer
Date Mon, 22 Feb 2010 13:16:27 GMT

    [ https://issues.apache.org/jira/browse/HAMA-199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12836613#action_12836613
] 

Hyunsik Choi commented on HAMA-199:
-----------------------------------

This issue is really important because our one aims at large scale processing that takes long
time. If hama doesn't have this feature and at least one server is fault, we have to restart
that processing.

Basically, this feature would be good to follow the fault tolerance model of the mapreduce,
materializing immediate results into local storage. Actually, that model is not efficient,
but that is robust. Later, we will improve this feature to be pipelined like mapreduce online.

> Add fault tolerance to BSPPeer
> ------------------------------
>
>                 Key: HAMA-199
>                 URL: https://issues.apache.org/jira/browse/HAMA-199
>             Project: Hama
>          Issue Type: Improvement
>          Components: bsp
>    Affects Versions: 0.2.0
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>
> This version of BSPPeer has no fault tolerance ability. When one or more BSPPeers lead
to fault, other BSPPeers will hang. So, BSPPeer needs to be fault tolerant.

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