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https://issues.apache.org/jira/browse/AMBARI-18361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16706903#comment-16706903
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ASF GitHub Bot commented on AMBARI-18361:
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asfgit commented on issue #22: [AMBARI-18361] Avoid unnecessary compilation
URL: https://github.com/apache/ambari-infra/pull/22#issuecomment-443649956
Refer to this link for build results (access rights to CI server needed):
https://builds.apache.org/job/Ambari-Infra-Github-PR-Builder/32/
Test PASSed.
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> 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
> Labels: pull-request-available
> Fix For: 2.5.0
>
> 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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