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https://issues.apache.org/jira/browse/CASSANDRA-7883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14122714#comment-14122714
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Benedict commented on CASSANDRA-7883:
-------------------------------------
I'm not convinced by the necessity of this, if only because we allocate in
large-ish quantities so there's not likely to be any measurable impact. That
said, it's also trivial and no downside, so happy to include if you post a
patch.
> 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
> Fix For: 2.1.1
>
>
> 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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