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Posted to commits@cassandra.apache.org by "Jay Patel (JIRA)" <ji...@apache.org> on 2014/09/05 10:20:24 UTC

[jira] [Created] (CASSANDRA-7883) Allow plugging JEMalloc for off-heap memtables

Jay Patel created CASSANDRA-7883:
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             Summary: 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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