Enable direct byte buffers LruBlockCache
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Key: HBASE-4027
URL: https://issues.apache.org/jira/browse/HBASE-4027
Project: HBase
Issue Type: Improvement
Reporter: Jason Rutherglen
Priority: Minor
Java offers the creation of direct byte buffers which are allocated outside of
the heap.
They need to be manually free'd, which can be accomplished using an documented
{{clean}} method.
The feature will be optional. After implementing, we can benchmark for
differences in speed and garbage collection observances.
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