Gopal V created TEZ-2849:
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Summary: Implement Specific Workaround for JDK-8026049 &
JDK-8073093
Key: TEZ-2849
URL: https://issues.apache.org/jira/browse/TEZ-2849
Project: Apache Tez
Issue Type: Sub-task
Reporter: Gopal V
The CPU performance overhead of the sort operation is tied to the JIT handling
of the aliased byte buffers without an explicit alignment (i.e a byte[] buffer
referenced as an IntBuffer).
Workaround that JIT limitation while keeping in mind the modern CPU micro-code
optimizations around alignment.
http://lemire.me/blog/archives/2012/05/31/data-alignment-for-speed-myth-or-reality/
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