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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6784) TestCoprocessorScanPolicy is sometimes flaky when run locally
Date Thu, 27 Sep 2012 15:46:08 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13464828#comment-13464828

Lars Hofhansl commented on HBASE-6784:

Most Unix's have good timers (I know Linux has), so it is rare that the two Puts here receive
the same timestamp (but still possible, so the test was still bad).

The last time I played with timers on Windows I found that the timer resolution there is about
10ms (but that was many years ago and might be better now).

> TestCoprocessorScanPolicy is sometimes flaky when run locally
> -------------------------------------------------------------
>                 Key: HBASE-6784
>                 URL: https://issues.apache.org/jira/browse/HBASE-6784
>             Project: HBase
>          Issue Type: Bug
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: Lars Hofhansl
>            Priority: Minor
>             Fix For: 0.94.2, 0.96.0
>         Attachments: 6784.txt
> The problem is not seen in jenkins build.  
> When we run TestCoprocessorScanPolicy.testBaseCases locally or in our internal jenkins
we tend to get random failures.  The reason is the 2 puts that we do here is sometimes getting
the same timestamp.  This is leading to improper scan results as the version check tends to
skip one of the row seeing the timestamp to be same. Marking this as minor.  As we are trying
to solve testcase related failures just raising this incase we need to resolve this also.
> For eg,
> Both the puts are getting the time
> {code}
> time 1347635287360
> time 1347635287360
> {code}

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