[jira] [Created] (NIFI-4221) Print app startup in human-readable time

["Andy LoPresto (JIRA)" <ji...@apache.org>]

Andy LoPresto created NIFI-4221:
-----------------------------------

             Summary: Print app startup in human-readable time
                 Key: NIFI-4221
                 URL: https://issues.apache.org/jira/browse/NIFI-4221
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Core Framework
    Affects Versions: 1.3.0
            Reporter: Andy LoPresto
            Priority: Minor


Currently the application startup time is printed in nanoseconds in the app log. While this is very precise, because of the scale of these values, it can require mental math to detect delays or variance from the standard/average timing. I think it would be helpful to print a "human-readable" (i.e. broken out into larger units) start time alongside the nanosecond precision time: 

{code}
2017-07-24 14:00:14,159 INFO [main] org.apache.nifi.NiFi Controller initialization took 15127377569 nanoseconds.
{code}

to:

{code}
2017-07-24 14:00:14,159 INFO [main] org.apache.nifi.NiFi Controller initialization took 15127377569 nanoseconds (15 seconds).
{code}

While currently it's simply a matter of moving the decimal over the right number of places, some deployments on cloud systems (especially those with low entropy before NIFI-3313 was resolved) could take minutes to deploy. Being able to parse these values in meaningful dimensions at a glance is helpful. 



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