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Posted to dev@cassandra.apache.org by guo Maxwell <cc...@gmail.com> on 2023/03/08 04:21:26 UTC
Re: [jira] [Updated] (CASSANDRA-18305) Enhance nodetool compactionstats with existing MBean metrics
Had a similar need early and have been trying to solve it. Looking forward
to this patch.
Brad Schoening (Jira) <ji...@apache.org>于2023年3月8日 周三下午12:15写道：
>
> [
> https://issues.apache.org/jira/browse/CASSANDRA-18305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
> ]
>
> Brad Schoening updated CASSANDRA-18305:
> ---------------------------------------
> Description:
> Nodetool compactionstats reports only on active compactions, if nothing is
> active, you see only:
> {quote}$nodetool compactionstats
>
> pending tasks: 0
> {quote}
> but in the MBean Compaction/TotalCompactionsCompleted there are recent
> statistic in events/second for:
> * Count
> * FifteenMinueRate
> * FiveMinueRate
> * MeanRate
> * OneMinuteRate
>
> It would be useful to see in addition:
> {quote}pending tasks: 0
>
> compactions completed: 20
>
> 1 minute rate: 0/second
>
> 5 minute rate: 2.3/second
>
> 15 minute rate: 4.6/second
> {quote}
> Also, since compaction_throughput_mb_per_sec is a throttling parameter in
> cassandra.yaml, it would be nice to show the actual compaction throughput
> and be able to observe if you're close to the limit. I.e.,
> {quote}compaction throughput 13.2 MBps / 16 MBps (82.5%)
> {quote}
>
> was:
> Nodetool compactionstats reports only on active compactions, if nothing is
> active, you see only:
> {quote}$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
>
> 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}
> Also, since compaction_throughput_mb_per_sec is a throttling parameter in
> cassandra.yaml, it would be nice to report the actual compaction throughput
> and be able to observe if you're close to the limit. I.e.,
>
> compaction throughput 13.2 MBps / 16 MBps (82.5%)
>
>
> > 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: Stefan Miklosovic
> > Priority: Normal
> >
> > 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
> > 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}
> > Also, since compaction_throughput_mb_per_sec is a throttling parameter
> in cassandra.yaml, 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}
>
>
>
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you are the apple of my eye !