[jira] [Commented] (CASSANDRA-8937) add liveSSTableCount metrics at keyspace level

["Tyler Hobbs (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-8937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14355114#comment-14355114 ] 

Tyler Hobbs commented on CASSANDRA-8937:
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There are a lot of metrics that we _could_ aggregate at the keyspace level but don't because it's simple enough to aggregate the table-level metrics.  In this case, it's just a sum.  I'm not sure if it's worth cluttering the metrics API for the convenience of this.

> add liveSSTableCount metrics at keyspace level
> ----------------------------------------------
>
>                 Key: CASSANDRA-8937
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8937
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: yangwei
>            Assignee: yangwei
>            Priority: Minor
>             Fix For: 2.1.4
>
>         Attachments: 0001-add-liveSSTableCount-metrics-at-keyspace-level.patch
>
>
> We currently don't have liveSSTableCount metrics aggregated at keyspace level.  If many sstables exists and we can't realize it earlier,  cassandra will oom while doing scanning operations. It would be nice and easy to aggregate it.



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