[GitHub] [accumulo] keith-turner opened a new issue #1355: Anaylyze how MasterTime uses System.nanoTime

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keith-turner opened a new issue #1355: Anaylyze how MasterTime uses System.nanoTime
URL: https://github.com/apache/accumulo/issues/1355
 
 
   The master time class persist the output of System.nanoTime to zookeeper.  System.nanoTime should only be used to compute elapsed times in a single process.  The following is from its javadoc.
   
   ```
        * This method can only be used to measure elapsed time and is
        * not related to any other notion of system or wall-clock time.
        * The value returned represents nanoseconds since some fixed but
        * arbitrary <i>origin</i> time (perhaps in the future, so values
        * may be negative).  The same origin is used by all invocations of
        * this method in an instance of a Java virtual machine; other
        * virtual machine instances are likely to use a different origin.
   ```
   
   I noticed this while looking at #1354.  Maybe the use of System.nanoTime is appropriate, I am not sure.  Opening this issue to remember to analyze its use.

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