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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-19164) Avoid UUID.randomUUID in tests
Date Thu, 02 Nov 2017 21:54:01 GMT
Mike Drob created HBASE-19164:
---------------------------------

             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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