wzhou-code 1ed48a542b IMPALA-11005 (part 3): Repalce random number generator with mt19937_64 ...

Previous patch upgraded boost library. This patch changes 64-bit random
number generator from ranlux64_3 to mt19937_64 since mt19937_64 has
better performance according to boost benchmark at https://www.boost.org
/doc/libs/1_74_0/doc/html/boost_random/performance.html.
Also fixs an unit-test which is affected by the change of random number
generator.

Testing:
 - Passed exhaustive tests.

Change-Id: Iade226fc17442f4d7b9b14e4a9e80a30a3856226
Reviewed-on: http://gerrit.cloudera.org:8080/18022
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2021-12-16 11:49:15 +00:00

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