[LUCENE-7014] Use TimeUnit.TARGETUNIT.convert() to convert between time units

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 5.4.1, 6.0
• Fix Version/s: 6.0
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Ahmet Arslan
• Created: 04/Feb/16 18:52
• Updated: 28/Aug/22 14:49

Description

Re-phrased from steve_rowe's comment :

System.nanoTime(), which is guaranteed to be monotonic, is now used to recored elapsed times. In several places, conversion from nano seconds to some target unit (e.g. seconds, milli seconds) is performed using hard-coded conversion constants, which is prone to mistakes.

It would be nice to use TimeUnit.TARGETUNIT.convert(sourceDuration, TimeUnit.SOURCEUNIT) instead.