[jira] [Commented] (CASSANDRA-4537) We should emit number of sstables in each level from JMX

["Brandon Williams (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-4537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13433833#comment-13433833 ] 

Brandon Williams commented on CASSANDRA-4537:
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I would go one further and say it should be available via nodetool compactionstats.  I can't count the number of times I've had to paste a python script that prints level counts.
                
> We should emit number of sstables in each level from JMX
> --------------------------------------------------------
>
>                 Key: CASSANDRA-4537
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4537
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.2
>            Reporter: sankalp kohli
>            Priority: Minor
>              Labels: compaction, leveled
>   Original Estimate: 12h
>  Remaining Estimate: 12h
>
> We should add methods to this Mbean org.apache.cassandra.db.ColumnFamilyStoreMBean
> These metrics will be helpful to see how sstables are distributed in different levels and how they move to higher level with time. 
> Currently we can see this by looking at the json file but with JMX, we can monitor the historic values over time using any monitoring tool.  

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