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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11045) Introducing a tool to detect flaky tests of hadoop jenkins test job
Date Thu, 09 Oct 2014 19:00:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14165560#comment-14165560
] 

Hadoop QA commented on HADOOP-11045:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12673946/HADOOP-11045.003.patch
  against trunk revision 180afa2.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

        {color:red}-1 release audit{color}.  The applied patch generated 1 release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/4888//testReport/
Release audit warnings: https://builds.apache.org/job/PreCommit-HADOOP-Build/4888//artifact/patchprocess/patchReleaseAuditProblems.txt
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/4888//console

This message is automatically generated.

> Introducing a tool to detect flaky tests of hadoop jenkins test job
> -------------------------------------------------------------------
>
>                 Key: HADOOP-11045
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11045
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: build, tools
>    Affects Versions: 2.5.0
>            Reporter: Yongjun Zhang
>            Assignee: Yongjun Zhang
>         Attachments: HADOOP-11045.001.patch, HADOOP-11045.002.patch, HADOOP-11045.003.patch
>
>
> File this jira to introduce a tool to detect flaky tests of hadoop jenkins test jobs.
Certainly it can be adapted to projects other than hadoop.
> I developed the tool on top of some initial work [~tlipcon] did. We find it quite useful.
With Todd's agreement, I'd like to push it to upstream so all of us can share (thanks Todd
for the initial work and support). I hope you find the tool useful too.
> The idea is, when one has the need to see if the test failure s/he is seeing in a pre-build
jenkins run is flaky or not, s/he could run this tool to get a good idea. Also, if one wants
to look at the failure trend of a testcase in a given jenkins job, the tool can be used too.
I hope people find it useful.
> This tool is for hadoop contributors rather than hadoop users. Thanks [~tedyu] for the
advice to put to dev-support dir.
> Description of the tool:
> {code}
> #
> # Given a jenkins test job, this script examines all runs of the job done
> # within specified period of time (number of days prior to the execution
> # time of this script), and reports all failed tests.
> #
> # The output of this script includes a section for each run that has failed
> # tests, with each failed test name listed.
> #
> # More importantly, at the end, it outputs a summary section to list all failed
> # tests within all examined runs, and indicate how many runs a same test
> # failed, and sorted all failed tests by how many runs each test failed in.
> #
> # This way, when we see failed tests in PreCommit build, we can quickly tell 
> # whether a failed test is a new failure or it failed before, and it may just 
> # be a flaky test.
> #
> # Of course, to be 100% sure about the reason of a failed test, closer look 
> # at the failed test for the specific run is necessary.
> #
> {code}
> How to use the tool:
> {code}
> Usage: determine-flaky-tests-hadoop.py [options]
> Options:
>   -h, --help            show this help message and exit
>   -J JENKINS_URL, --jenkins-url=JENKINS_URL
>                         Jenkins URL
>   -j JOB_NAME, --job-name=JOB_NAME
>                         Job name to look at
>   -n NUM_PREV_DAYS, --num-days=NUM_PREV_DAYS
>                         Number of days to examine
> {code}



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