Re: about new Features/outcast

Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx> · Thu, 07 Aug 2014 09:28:47 +0530



    hi,

        I am one of the people responsible for this feature. The feature
    is still in design phase. Nothing concrete yet. I will send out a
    mail once we are certain of the design.

    
    Pranith

    On 08/07/2014 09:21 AM, hwh@xxxxxxxxxxx
      wrote:

    
      hi :
      

      who have more detail info about outcast, eg. design document.
        can send to me ？thank you
      

        Features/outcast
        < Features
        
            Feature 
          This feature provides a way of preventing split-brains in
            time.
          
            Summary 
          At the moment there is no way of marking a brick as stale
            copy, because of this if a file is modified when the source
            brick is down the file goes into split-brain. This feature
            should give the functionality where a file can be marked as
            outcast. Modifications on the file are considered to be
            successful only if it succeeds on at least one good copy. If
            the operation succeeds only on outcast files then the
            operation is treated as failure.
          
          Note: Split-brains due to network-partition can still
            happen. 
        
      
            hwh@xxxxxxxxxxx
          
        
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