[ 
https://issues.apache.org/jira/browse/AMBARI-18361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15485543#comment-15485543
 ] 

Hadoop QA commented on AMBARI-18361:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12828058/AMBARI-18361.patch
  against trunk revision .

    {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 release audit{color}.  The applied patch does not increase 
the total number of release audit warnings.

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

Test results: 
https://builds.apache.org/job/Ambari-trunk-test-patch/8639//testReport/
Console output: 
https://builds.apache.org/job/Ambari-trunk-test-patch/8639//console

This message is automatically generated.

> All classes recompiled due to Maven bug, even if none changed
> -------------------------------------------------------------
>
>                 Key: AMBARI-18361
>                 URL: https://issues.apache.org/jira/browse/AMBARI-18361
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.4.0
>            Reporter: Doroszlai, Attila
>            Assignee: Doroszlai, Attila
>            Priority: Minor
>             Fix For: 3.0.0
>
>         Attachments: AMBARI-18361.patch
>
>
> maven-compiler-plugin version 3.0 has a 
> [bug|https://issues.apache.org/jira/browse/MCOMPILER-187] that causes all 
> classes to be recompiled even if no classes have changed.
> {noformat}
> [INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ 
> ambari-server ---
> [INFO] Changes detected - recompiling the module!
> [INFO] Compiling 1720 source files ...
> ...
> [INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ 
> ambari-server ---
> [INFO] Changes detected - recompiling the module!
> [INFO] Compiling 760 source files ...
> {noformat}
> version 3.1+ has [another, related 
> bug|https://issues.apache.org/jira/browse/MCOMPILER-209] that causes all 
> classes to be compiled even if only one has changed, although it seems to 
> correctly detect the "no change" case.
> {noformat}
> [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ 
> ambari-server ---
> [INFO] Changes detected - recompiling the module!
> [INFO] Compiling 1720 source files ...
> {noformat}



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