I'm attempting to plot how busy the node is doing compactions but there
seems to only be a few metrics reported that might be suitable:
CompletedTasks, PendingTasks, TotalBytesCompacted,
TotalCompactionsCompleted.
It's not clear to me what the difference between CompletedTasks and
I have not looked at this JMX object in a while, however the
compaction manager can support multiple threads. Also it moves from
0-filesize each time it has to compact a set of files.
That is more useful for showing current progress rather then lifetime history.
On Fri, Oct 5, 2012 at 7:27 PM,
I've recently added compaction rate (in bytes / second) to my monitors for
cassandra and am seeing some odd values. I wasn't expecting the values for
TotalBytesCompacted to sometimes decrease from one reading to the next. It
seems that the value should be monotonically increasing while a server
