[jira] [Assigned] (KAFKA-2607) Review `Time` interface and its usage

["Aleksei Kogan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-2607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aleksei Kogan reassigned KAFKA-2607:
------------------------------------

    Assignee: Aleksei Kogan

> Review `Time` interface and its usage
> -------------------------------------
>
>                 Key: KAFKA-2607
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2607
>             Project: Kafka
>          Issue Type: Improvement
>    Affects Versions: 0.11.0.0, 1.0.0
>            Reporter: Ismael Juma
>            Assignee: Aleksei Kogan
>            Priority: Major
>              Labels: newbie
>
> Two of `Time` interface's methods are `milliseconds` and `nanoseconds` which are implemented in `SystemTime` as follows:
> {code}
>     @Override
>     public long milliseconds() {
>         return System.currentTimeMillis();
>     }
>     @Override
>     public long nanoseconds() {
>         return System.nanoTime();
>     }
> {code}
> The issue with this interface is that it makes it seem that the difference is about the unit (`ms` versus `ns`) whereas it's much more than that:
> https://blogs.oracle.com/dholmes/entry/inside_the_hotspot_vm_clocks
> We should probably change the names of the methods and review our usage to see if we're using the right one in the various places.



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