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https://issues.apache.org/jira/browse/CASSANDRA-18305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17735412#comment-17735412
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Brandon Williams commented on CASSANDRA-18305:
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I haven't had a chance to look yet, but how hard is restoring the behavior that
ccm is expecting? We aren't the only consumers of ccm so breaking something
there could have greater impact, and working around it in the dtests isn't a
friendly solution either.
bq. BTW do we really want to see this in 4.1 and trunk? I would go with trunk
only.
If we must break ccm, then definitely trunk only.
> Enhance nodetool compactionstats with existing MBean metrics
> ------------------------------------------------------------
>
> Key: CASSANDRA-18305
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18305
> Project: Cassandra
> Issue Type: Improvement
> Components: Tool/nodetool
> Reporter: Brad Schoening
> Assignee: Manish Ghildiyal
> Priority: Normal
> Fix For: 4.0.x, 4.1.x, 5.x
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> Nodetool compactionstats reports only on active compactions, if nothing is
> active, you see only:
> {quote}$nodetool compactionstats
> pending tasks: 0
> {quote}
> but in the MBean Compaction/TotalCompactionsCompleted there are recent
> statistic in events/second for:
> * Count
> * FifteenMinueRate
> * FiveMinueRate
> * MeanRate
> * OneMinuteRate
> 1) It would be useful to see in addition:
> {quote}pending tasks: 0
> compactions completed: 20
> 1 minute rate: 0/second
> 5 minute rate: 2.3/second
> 15 minute rate: 4.6/second
> {quote}
> 2) Since compaction_throughput_mb_per_sec is a throttling parameter in
> cassandra.yaml (default 64 MBps), it would be nice to show the actual
> compaction throughput and be able to observe if you're close to the limit.
> I.e.,
> {quote}compaction throughput 13.2 MBps / 16 MBps (82.5%)
> {quote}
> 3) for completness, compactionstats should list the number of concurrent
> compactors configured, perhaps simply add to existing 'pending tasks' line:
> {quote}4 concurrent compactors, 0 pending tasks
> {quote}
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