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https://issues.apache.org/jira/browse/HBASE-8927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14114482#comment-14114482
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Gary Helmling commented on HBASE-8927:
--------------------------------------

Regarding precision, FWIW in the case of Tephra, we multiply the current 
timestamp in milliseconds by 1000000 and add a counter (reset every 
millisecond).  1 billion operations per seconds is probably more than we need, 
so if we need to support more that 292 years worth of timestamped values, we 
could probably adjust to a lower counter range.

> Use nano time instead of mili time everywhere
> ---------------------------------------------
>
>                 Key: HBASE-8927
>                 URL: https://issues.apache.org/jira/browse/HBASE-8927
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>              Labels: phoenix
>         Attachments: 8927.txt
>
>
> Less collisions and we are paying the price of a long anyways so might as 
> well fill it.



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