[jira] [Commented] (AMBARI-18361) All classes recompiled due to Maven bug, even if none changed

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ 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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