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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}$nodetool compactionstats
pending tasks: 0
{quote}
but in the MBean Compaction/TotalCompactionsCompleted there are recent
statistic in events/second for:
* Count
* FifteenMinueRate
* FiveMinueRate
* MeanRate
* OneMinuteRate
1) It would be useful to see in addition:
{quote}pending tasks: 0
compactions completed: 20
1 minute rate: 0/second
5 minute rate: 2.3/second
15 minute rate: 4.6/second
{quote}
2) Since compaction_throughput_mb_per_sec is a throttling parameter in
cassandra.yaml (default 64 MBps), it would be nice to show the actual
compaction throughput and be able to observe if you're close to the limit.
I.e.,
{quote}compaction throughput 13.2 MBps / 16 MBps (82.5%)
{quote}
3) for completness, compactionstats should list the number of concurrent
compactors configured, perhaps simply add to existing 'pending tasks' line:
{quote}4 concurrent compactors, 0 pending tasks
{quote}
was:
Nodetool compactionstats reports only on active compactions, if nothing is
active, you see only:
{quote}$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
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
{quote}concurrent compactions permitted: 2
{quote}
or perhaps simply add to existing 'pending tasks' line:
{quote}2 concurrent compactors, 0 pending tasks
{quote}
> 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
> 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
> 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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