Re: Cassandra Compaction Metrics - CompletedTasks vs TotalCompactionCompleted
On 2017/10/31 16:56:29, Chris Lohfink wrote: > The "CompletedTasks" metric is a measure of how many tasks ran on these two > executors combined. > The "TotalCompactionsCompleted" metric is a measure of how many compactions > issued from the compaction manager ran (normal compactions, cache writes, > scrub, 2i and MVs). So while they may be close, depending on whats > happening on the system, theres no assurance that they will be within any > bounds of each other. all this is very interesting, but I do not understand why CompletedTasks grows at the rate of five thousand operations per hour in my cloud. Have an idea where can I look? kalo dromo - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
difference between CompletedTasks and TotalComactionCompleted
Hello! I'm trying to monitor cassandra through jmx and it turns out that I find two values that seem to be the same thing but not: org.apache.cassandra.metrics: type = Compaction, name = CompletedTasks.Value org.apache.cassandra.metrics: type = Compaction, name = TotalCompactionsCompleted.Count and I do not know what to use. I began to graph both and the second one remains stable, but the first increases from five thousand per hour in a clulster without traffic. So the questions are: which one should I graph? and why does the first increase if there is no traffic? Excuse me if you do not understand, I'm using a translator. kalo dromo, Dionne
