Tim Armstrong 3661100fa3 IMPALA-6645: Enable disk spill encryption by default ...

Perf:
Targeted benchmarks with a heavily spilling query on a machine
with PCLMULQDQ support show < 5% of CPU time spent in encryption and
decryption. PCLMULQDQ was introduced in AMD Bulldozer (c. 2011)
and Intel Westmere (c. 2010).

Testing:
Ran core tests with the change.

Updated the custom cluster test to exercise the non-default
configuration.

Change-Id: Iee4be2a95d689f66c3663d99e4df0fb3968893a9
Reviewed-on: http://gerrit.cloudera.org:8080/10345
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>
Tested-by: Tim Armstrong <tarmstrong@cloudera.com>

2018-05-15 22:23:14 +00:00

406 B

Raw Blame History

View Raw