leventov opened a new pull request #6226: Prohibit some Random usage patterns
URL: https://github.com/apache/incubator-druid/pull/6226
 
 
   - `Math.abs(random.nextInt())` doesn't guarantee positivity
   - `random.nextInt() % x`
   - `new Random()` should never be used, `ThreadLocalRandom.current()` or 
`SplittableRandom` instead.
   
   I also replaced most `new Random(SOME_CONSTANT_SEED)` in benchmarks with 
`ThreadLocalRandom.current()` because benchmarks shouldn't generally be always 
identical, randomness between the runs could make results statistically more 
reliable.

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