Add Fencing to Bookkeeper
-------------------------
Key: BOOKKEEPER-101
URL: https://issues.apache.org/jira/browse/BOOKKEEPER-101
Project: Bookkeeper
Issue Type: New Feature
Reporter: Ivan Kelly
Assignee: Ivan Kelly
Fix For: 4.0.0
BookKeeper is designed for use as a Write ahead log. In systems with a
primary/backup architecture, the primary will write state updates to the WAL.
If the primary dies the backup comes online, reads the WAL to get the latest
state and starts serving requests. However, if the primary was only partitioned
from the network, or stuck in a long GC, a split brain occurs. Both primary and
backup can service client requests.
Fencing(http://en.wikipedia.org/wiki/Fencing_%28computing%29) ensures that this
cannot happen. With fencing, the backup can close the WAL of the primary, and
cause any subsequent attempt by the primary to write to the WAL to give an
error.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
