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https://issues.apache.org/jira/browse/CASSANDRA-7883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14125120#comment-14125120
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Benedict commented on CASSANDRA-7883:
-------------------------------------
Hi Jay,
If we plan to use this, I'd suggest we stick with the allocator that can
already be defined for use in e.g. row cache etc., and just use it here as
well. No point polluting the config file.
> Allow plugging JEMalloc for off-heap memtables
> ----------------------------------------------
>
> Key: CASSANDRA-7883
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7883
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jay Patel
> Assignee: Jay Patel
> Labels: patch
> Fix For: 2.1.1
>
> Attachments: trunk-7883.txt
>
>
> Off-heap memtables (memtable_allocation_type:offheap_objects) introduced by
> CASSANDRA-6694 uses native GCC allocator. Provide an option to use JEMalloc
> allocator (http://www.canonware.com/jemalloc/) which is good to reduce
> fragmentation.
> CASSANDRA-3997 adds below option for off-heap caches and metadata. But it's
> not in effect for off-heap memtables. Should be use the same option or add
> another?
> memory_allocator: JEMallocAllocator
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