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From "Vijay (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-3495) capture BloomFilter memory size in Cassandra (JMX)
Date Wed, 23 Nov 2011 00:50:39 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-3495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vijay updated CASSANDRA-3495:
-----------------------------

    Attachment: 0001-Add-BloomFilter-Serialization-size.patch

Simple patch to add bf disk usage in the cfstats. I was thinking of using memory meter to
measure the inmemory size but the over head in memory is almost constant and hence thought
choose a simpler solution.

Let me know if you guys think otherwise.
                
> capture BloomFilter memory size in Cassandra (JMX)
> --------------------------------------------------
>
>                 Key: CASSANDRA-3495
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3495
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Tools
>    Affects Versions: 1.0.4
>            Reporter: Jackson Chung
>            Assignee: Vijay
>            Priority: Minor
>             Fix For: 1.0.4
>
>         Attachments: 0001-Add-BloomFilter-Serialization-size.patch
>
>
> Maybe this could be done in https://issues.apache.org/jira/browse/CASSANDRA-3347 also,
but not sure what's the scope in that jira. It'd be great if the BF memory size can be captured
in the JMX monitoring. 
> Though not sure how you would capture the "heap size" (easily that is) of the object.
There is a BF.serializedSize() , can this be exposed to the BloomFilterTracker and DataTracker...
and use this instead? Anyway, will let the implementor to decide/design 

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