[ https://issues.apache.org/jira/browse/PHOENIX-3070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
James Taylor updated PHOENIX-3070: ---------------------------------- Fix Version/s: (was: 4.8.1) 4.8.0 > 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 > Assignee: Lars Hofhansl > Priority: Minor > Fix For: 4.8.0 > > Attachments: 3070.txt > > > 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 > 0.06ms (60us), or even better: {{new > UUID(ThreadLocalRandom.current().nextLong(), > ThreadLocalRandom.current().nextLong())}}, which takes less than 0.004ms > (4us) on my box. -- This message was sent by Atlassian JIRA (v6.3.4#6332)