Dmytro Dragan created STORM-1069:
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Summary: Usage of System.currentTimeMillis() in KafkaSpout can
create delays
Key: STORM-1069
URL: https://issues.apache.org/jira/browse/STORM-1069
Project: Apache Storm
Issue Type: Bug
Components: storm-kafka
Reporter: Dmytro Dragan
Priority: Trivial
_System.currentTimeMillis()_ returns the current time (wall-clock). Cause of
this, you can suddenly get too big or even negative duration measured operation
if between calls _System.currentTimeMillis()_ has changed the time ( hours
translated to summer / winter time , the adjusted time protocol NTP,
administrator corrected clock, etc).
Theoretically, _(now - _lastUpdateMs)_ in 125 line could return negative values.
The better solution is to use _System.nanoTime()_ for measure elapsed time.
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