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https://issues.apache.org/jira/browse/HBASE-6476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13425867#comment-13425867
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Lars Hofhansl commented on HBASE-6476:
--------------------------------------

bq. There are some tests that play with the EnvironmentEdgeManager, they had to 
be made medium as it was not possible to have them on a shared jvm as the small 
tests.

So simply replacing all of System.currentTimeMillis() with 
EnvironmentEdgeManager.currentTimeMillis() should not be a problem, but if a 
test would actually mess with it, it would need to run on its own JVM.

Do you see any other problems with just doing wholesale scripted replace?
                
> Replace all occurrances of System.currentTimeMillis() with EnvironmentEdge 
> equivalent
> -------------------------------------------------------------------------------------
>
>                 Key: HBASE-6476
>                 URL: https://issues.apache.org/jira/browse/HBASE-6476
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>            Priority: Minor
>             Fix For: 0.94.2
>
>
> There are still some areas where System.currentTimeMillis() is used in HBase. 
> In order to make all parts of the code base testable and (potentially) to be 
> able to configure HBase's notion of time, this should be generally be 
> replaced with EnvironmentEdgeManager.currentTimeMillis().
> How hard would it be to add a maven task that checks for that, so we do not 
> introduce System.currentTimeMillis back in the future?

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