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https://issues.apache.org/jira/browse/CASSANDRA-75?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12698583#action_12698583
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Eric Evans edited comment on CASSANDRA-75 at 4/13/09 4:13 PM:
--------------------------------------------------------------
0001-add-instrumentation-for-memtable-attributes.patch
The current Memtable class implements an MBean interface, but it is not wired
up. Most likely, this is because it would become defunct after the first flush
when the memtable is switched out for a new one.
The solution is to instrument ColumnFamilyStore and expose the memtable
attributes from there.
was (Author: urandom):
The current Memtable class implements an MBean interface, but it is not
wired up. Most likely, this is because it would become defunct after the first
flush when the memtable is switched out for a new one.
The solution is to instrument ColumnFamilyStore and expose the memtable
attributes from there.
> wire up memtable mbean
> ----------------------
>
> Key: CASSANDRA-75
> URL: https://issues.apache.org/jira/browse/CASSANDRA-75
> Project: Cassandra
> Issue Type: Improvement
> Affects Versions: trunk
> Reporter: Eric Evans
> Assignee: Eric Evans
> Fix For: trunk
>
> Attachments: 0001-add-instrumentation-for-memtable-attributes.patch,
> 0002-an-MBean-attribute-for-displaying-a-flush-counter.patch,
> 0003-jmx-resource-names-to-reflect-the-move-to-apache.patch
>
>
> It would be useful in the tuning of MemtableSizeInMB and
> MemtableObjectCountInMillions if the Memtable values for currentSize_ and
> currentObjectCount_ where exposed via JMX.
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