On Fri, Oct 25, 2013 at 3:22 PM, Jason Rosenberg <[EMAIL PROTECTED]> wrote:
Unclean shutdown could result in data loss - since you are moving
leadership to a replica that has fallen out of ISR. i.e., it's log end
offset is behind the last committed message to this partition.
Take a look at the packaged log4j.properties file. The controller's
partition/replica state machines and its channel manager which
sends/receives leaderandisr requests/responses to brokers uses a
stateChangeLogger. The replica managers on all brokers also use this
logger.
Our logging can improve - e.g., it looks like on controller movement
we could retry without saying why.
Thanks,

Joel
 
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