bookie server doesn't quit when running out of disk space
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Key: BOOKKEEPER-180
URL: https://issues.apache.org/jira/browse/BOOKKEEPER-180
Project: Bookkeeper
Issue Type: Bug
Components: bookkeeper-server
Reporter: Sijie Guo
Fix For: 4.1.0
we found that the publish throughput drops down when one bookie server ran out
of disk space (due to we don't do log rotation which exhausts disk space).
did some investigation, we found that bookie server doesn't quit when
encountering no disk space issue. so hub server treat this bookie server as
available. The adding requests would be sent to this bookie server, some adding
requests are put in journal queue to flush, but the journal flush thread has
quit due to no disk space. so these adding requests didn't respond to bookie
client until it read timeout and chose other bookie servers.
we did an experiment to shut down the ran-out-of-disk-space bookie, the publish
throughput went up again quickly.
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