add CachingClusteredClient benchmark, refactor some stuff#8089

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clintropolis merged 9 commits intoapache:masterfrom

clintropolis:caching-clustered-client-benchmark

Jul 18, 2019

Commits on Jul 17, 2019

Commits on Jul 18, 2019

rename createComparator to createResultComparator, fix typo, firstNonNull nullable parameters
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