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Posted to user@cassandra.apache.org by Scott Dworkis <sv...@mylife.com> on 2010/08/20 00:08:17 UTC
recovering a failed node does not seem to recover replicas
following the failure handling process described here:
http://wiki.apache.org/cassandra/Operations
i don't at the end seem to have all the data... i have half as much being
reported by nodetool ring as i started with. i'm guessing the replicas
are not being recovered. however if i take the extra steps of repair and
cleanup (as described by the alternative approach), i seem to get the same
amount of data that i started with. btw, then i do a gc to clean out the
2.5x amount of disk usage consumed by repair and cleanup... this gc might
be automatic with disks that are closer to full than mine.
so, i think the wiki isn't quite accurate, and probably should mention the
need for at least 2.5x of what is reported by nodetool ring worth of
storage to handle recovery of a failed node.
-scott