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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10325) improve jenkins javadoc warnings from test-patch.sh
Date Wed, 05 Feb 2014 01:37:08 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13891580#comment-13891580
] 

Andrew Wang commented on HADOOP-10325:
--------------------------------------

I looked at the previous and new proposed behavior for this patch, and I don't think either
are really counting the number of Javadoc warnings. The old behavior looks at the full maven
output, chops off everything after the first "Javadoc Warnings", and then counts anything
with "[WARNING]" and "warning" in it. Unfortunately, that includes javac warnings as well.
The new behavior doesn't bother with the chop, and thus results in counting more warnings,
but still not the actual number of Javadoc warnings.

I tried this, and it seems to work more reliably:

{code}
cat patchJavadocWarnings.txt | egrep "^[0-9]+ warnings$" | awk '{sum+=$1} END {print sum}'
{code}

We could also be more sure by doing something like "egrep -A 1 ..." and making sure the same
number of " # warnings" lines matches the number of lines with "[WARNING] Javadoc Warnings"
(i.e., each "# warning" line has an immediately following "[WARNING] Javadoc Warnings").

> improve jenkins javadoc warnings from test-patch.sh
> ---------------------------------------------------
>
>                 Key: HADOOP-10325
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10325
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HADOOP-10325.001.patch, HADOOP-10325.002.patch
>
>
> Currently test-patch.sh uses {{OK_JAVADOC_WARNINGS}} to know how many warnings trunk
is expected to have.  However, this is a fragile and difficult to use system, since different
build slaves may generate different numbers of warnings (based on compiler revision, etc.).
 Also, programmers must remember to update {{OK_JAVADOC_WARNINGS}}, which they don't always.
 Finally, there is no easy way to find what the *new* javadoc warnings are in the huge pile
of warnings.
> We should change this to work the same way the javac warnings code does: to simply build
with and without the patch and do a diff.  The diff should be saved for easy perusal.  We
also should not complain about warnings being removed.



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