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https://issues.apache.org/jira/browse/CASSANDRA-2252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stu Hood updated CASSANDRA-2252:
--------------------------------
Attachment: merged-2252.tgz
Rebased for trunk. I took the easy way out and just included the Allocator's
allocation count in the memtable live size: this will overcount, but it
accounts for fragmentation due to updates. I've started a patch for JAMM to add
a mode that will allow us to ignore shared buffers: see
[jamm/buffer-behavior|https://github.com/stuhood/jamm/commits/buffer-behavior].
> off-heap memtables
> ------------------
>
> Key: CASSANDRA-2252
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2252
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Fix For: 1.0
>
> Attachments: 0001-add-MemtableAllocator.txt,
> 0002-add-off-heap-MemtableAllocator-support.txt, merged-2252.tgz
>
> Original Estimate: 0.4h
> Remaining Estimate: 0.4h
>
> The memtable design practically actively fights Java's GC design. Todd
> Lipcon gave a good explanation over on HBASE-3455.
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