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Todd Lipcon commented on HDFS-2185: ----------------------------------- BTW, should add that another goal is to implement a client failover solution which uses the {{activeNodeInfo}} information to locate the active NN. We can probably borrow some code from Dhruba's AvatarNode patch for this. > HA: ZK-based FailoverController > ------------------------------- > > Key: HDFS-2185 > URL: https://issues.apache.org/jira/browse/HDFS-2185 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Eli Collins > Assignee: Todd Lipcon > > This jira is for a ZK-based FailoverController daemon. The FailoverController > is a separate daemon from the NN that does the following: > * Initiates leader election (via ZK) when necessary > * Performs health monitoring (aka failure detection) > * Performs fail-over (standby to active and active to standby transitions) > * Heartbeats to ensure the liveness > It should have the same/similar interface as the Linux HA RM to aid > pluggability. -- 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