about new Features/outcast

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hi :

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


Features/outcast

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. 



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