Lars Hofhansl created PHOENIX-3070: -------------------------------------- Summary: Unnecessary use of UUID.randomUUID() Key: PHOENIX-3070 URL: https://issues.apache.org/jira/browse/PHOENIX-3070 Project: Phoenix Issue Type: Bug Reporter: Lars Hofhansl
I see {{UUID.randomUUID()}} used all over Phoenix a lot. {{randomUUID}} uses {{SecureRandom}} internally, which - on my machine - takes almost 3ms, and that is _per UUID_! I don't think we need a UUIDs from a cryptographically sound random number generator. We could do {{new UUID(random.nextLong(), random.nextLong())}}, which takes 0.07ms (70us), or even better: {{new UUID(ThreadLocalRandom.current().nextLong(), random.nextLong())}}, which takes less than 0.02ms (20us) on my box. -- This message was sent by Atlassian JIRA (v6.3.4#6332)