[jira] [Updated] (HAMA-636) Confined recovery

["Edward J. Yoon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HAMA-636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Edward J. Yoon updated HAMA-636:
--------------------------------

    Description: 
"Confined recovery" mentioned in Pregel paper can be used to improve the cost and latency of recovery. 

In addition to the existing HDFS checkpoints,1) the tasks log outgoing messages to local filesystem for each superstep (See disk queue). When a task fails, 2) it reverts to the last checkpoint. 3) Other tasks re-send messages sent to failed task at each superstep occurring after the last checkpoint.

  was:
"Confined recovery" mentioned in Pregel paper can be used to improve the cost and latency of recovery. 

In addition to the existing HDFS checkpoints,1) the tasks log outgoing messages to local filesystem for each superstep (See disk queue). When a task fails, 2) it reverts to the last checkpoint. 3) Other workers re-send messages sent to failed worker at each superstep occurring after the last checkpoint.

    
> Confined recovery
> -----------------
>
>                 Key: HAMA-636
>                 URL: https://issues.apache.org/jira/browse/HAMA-636
>             Project: Hama
>          Issue Type: New Feature
>          Components: bsp core, messaging
>            Reporter: Edward J. Yoon
>
> "Confined recovery" mentioned in Pregel paper can be used to improve the cost and latency of recovery. 
> In addition to the existing HDFS checkpoints,1) the tasks log outgoing messages to local filesystem for each superstep (See disk queue). When a task fails, 2) it reverts to the last checkpoint. 3) Other tasks re-send messages sent to failed task at each superstep occurring after the last checkpoint.

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