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From "Marcus Olsson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-13084) Avoid byte-array copy when key cache is disabled
Date Thu, 29 Dec 2016 09:56:58 GMT
Marcus Olsson created CASSANDRA-13084:
-----------------------------------------

             Summary: Avoid byte-array copy when key cache is disabled
                 Key: CASSANDRA-13084
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13084
             Project: Cassandra
          Issue Type: Bug
            Reporter: Marcus Olsson
            Assignee: Marcus Olsson
            Priority: Trivial


While profiling a cluster with the key cache disabled some unnecessary heap pressure was observed.
It seems that even though the key cache is disabled we still create the *KeyCacheKey* object
which uses _ByteBufferUtil.getArray()_ to copy the keys byte array.

I don't believe it's a big issue but it's still unnecessary when not using the key cache.



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