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Posted to issues@hbase.apache.org by "Mike Drob (JIRA)" <ji...@apache.org> on 2017/11/02 21:54:01 UTC

[jira] [Created] (HBASE-19164) Avoid UUID.randomUUID in tests

Mike Drob created HBASE-19164:
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             Summary: Avoid UUID.randomUUID in tests
                 Key: HBASE-19164
                 URL: https://issues.apache.org/jira/browse/HBASE-19164
             Project: HBase
          Issue Type: Bug
          Components: test
            Reporter: Mike Drob
            Priority: Major


We have a lot of places in our test code where we use {{UUID.randomUUID}} to generate table names or paths for uniqueness. Unfortunately, this uses up a good chunk of system entropy, since Sun chose that random UUID's should use the NativePRNGBlocking implementation.

We don't need to block on entropy for random bits to pick a random table name in a test, so we can use something that doesn't strain the system too much - secure random can be a source of problems on some VM or containers.



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