Robert Stupp created CASSANDRA-12029:
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Summary: Use off-heap memtables by default
Key: CASSANDRA-12029
URL: https://issues.apache.org/jira/browse/CASSANDRA-12029
Project: Cassandra
Issue Type: Improvement
Reporter: Robert Stupp
Priority: Minor
A memtable configuration for 0mb on-heap and >0 mb off-heap is currently
rejected.
I'm not fully sure whether this is intentional, but making the memtable
completely off-heap could reduce heap usage and GC pressure using a
configuration like this:
{code}
memtable_heap_space_in_mb: 0
memtable_offheap_space_in_mb: 1024
memtable_allocation_type: offheap_objects
{code}
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