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From "Thomas Jungblut (Created) (JIRA)" <>
Subject [jira] [Created] (HAMA-515) Counter should be synchronized by sync()
Date Fri, 24 Feb 2012 09:43:48 GMT
Counter should be synchronized by sync()

                 Key: HAMA-515
             Project: Hama
          Issue Type: New Feature
    Affects Versions: 0.4.0
            Reporter: Thomas Jungblut
            Priority: Minor
             Fix For: 0.5.0

We should synchronize the counters in all tasks after a sync() call. 

Then someone can use it for flow control. E.G. graph related algorithms, to get the number
of globally updated vertices.

Two options to solve this:
-Sync the whole stuff over RPC from the BSPMaster
-Use Zookeeper for counter handling

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