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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4537) We should emit number of sstables in each level from JMX
Date Tue, 11 Sep 2012 23:20:07 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13453539#comment-13453539
] 

Hudson commented on CASSANDRA-4537:
-----------------------------------

Integrated in Cassandra #2090 (See [https://builds.apache.org/job/Cassandra/2090/])
    Add SSTable count per level to cfstats patch by yukim; reviewed by jbellis for CASSANDRA-4537
(Revision c64d975cdf9eebddb04801573035a7272f779fed)

     Result = ABORTED
yukim : 
Files : 
* src/java/org/apache/cassandra/db/compaction/LeveledManifest.java
* src/java/org/apache/cassandra/tools/NodeCmd.java
* src/java/org/apache/cassandra/db/ColumnFamilyStoreMBean.java
* CHANGES.txt
* src/java/org/apache/cassandra/db/ColumnFamilyStore.java
* src/java/org/apache/cassandra/db/compaction/LeveledCompactionStrategy.java

                
> 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: 1.0.0
>            Reporter: sankalp kohli
>            Assignee: Yuki Morishita
>            Priority: Minor
>              Labels: compaction, leveled
>             Fix For: 1.2.0 beta 1
>
>         Attachments: 4537.txt, 4537-v2.txt
>
>   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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