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From Wayne <wav...@gmail.com>
Subject Manual Compaction in Production
Date Mon, 08 Nov 2010 22:07:36 GMT
Can anyone speak to best practices for running manual compaction in
production? Our assumption is that without it the sstables will become too
fragmented...is this an accepted "fact"? Obviously it depends on the volume
of writes, but I am looking for current production practices.

Since it takes a lot of resources and 4-5 hours for our current node size of
500Gb weekly seems like a sensible option for us. Is this a normal practice?

Is it best to run on all nodes at the same time or staggered across nodes to
reduce total cluster slow-down? Given that full compaction has a major
affect on a node and its ability to function under heavy load our assumption
is that staggered over the weekend for example (our low usage time) would be
best.

Any recommendations?

Thanks

Wayne

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