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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2578) Add ability for tests to override server-side timestamp setting (currentTimeMillis)
Date Tue, 25 May 2010 21:31:36 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12871369#action_12871369

stack commented on HBASE-2578:

First, do we have examples of tests that are prone to the condition described above in the
description, and if so, what are they?  Are they so many it merits a system such as Dan has
cast?  Do we think that Dan's system will be filled out further?  If so, we should take a
step back and try and work in some general-purpose tooling (Since we're changing a fundamental,
currentSystemMillis() just in testing, it seems something like aspectj would make sense in

If we think this a one-time only thing, then Dan's patch looks good to me.

> Add ability for tests to override server-side timestamp setting (currentTimeMillis)
> -----------------------------------------------------------------------------------
>                 Key: HBASE-2578
>                 URL: https://issues.apache.org/jira/browse/HBASE-2578
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jonathan Gray
>            Assignee: Daniel Ploeg
>         Attachments: HBASE-2578.txt
> Many of our tests use client APIs which do not set explicit stamps.  This creates weird
timing issues with tests running on different systems because sometimes a set of operations
happens in the same millisecond and other times they do not.
> We should have a way for a test to specify it's own way of generating the timestamps
(for example, could always increment by 1 ensuring forward progression in time).

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