backoff-restart flush algorithm has a bug
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Key: JGRP-509
URL:
http://jira.jboss.com/jira/browse/JGRP-509
Project: JGroups
Issue Type: Bug
Reporter: Michael Newcomb
Assigned To: Bela Ban
Fix For: 2.5
Consider FLUSH.startFlush():
If the timeout expires on the flush_promise, the backoff-sleep algorithm kicks in. This
sleeps for a random time and then tries calls startFlush again. The problem is that
between the time that the flush_promise times out and startFlush is re-issued, the flush
could have completed successfully, but it would go unnoticed, because after Util.sleep
completes, the flush_promise is reset.
Recommend using the flush_promise.getResultWithTimeout(timeout) alone and not
Util.sleep(). The group is just as operational during
flush_promise.getResultWithTimeout(timeout) as in Util.sleep().
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