[jira] [Created] (GEODE-130) Suppress proprietary API compiler warnings

["Anthony Baker (JIRA)" <ji...@apache.org>]

Anthony Baker created GEODE-130:
-----------------------------------

             Summary: Suppress proprietary API compiler warnings
                 Key: GEODE-130
                 URL: https://issues.apache.org/jira/browse/GEODE-130
             Project: Geode
          Issue Type: Bug
            Reporter: Anthony Baker
            Priority: Trivial


Geode uses several internal JDK classes like SignalHandler and Unsafe.  These generate compiler warnings like:

{noformat}
/Users/abaker/code/incubator-geode/gemfire-core/src/main/java/com/gemstone/gemfire/management/internal/cli/shell/unsafe/GfshSignalHandler.java:73: warning: SignalHandler is internal proprietary API and may be removed in a future release
    return (handler == SignalHandler.SIG_DFL || handler == SignalHandler.SIG_IGN ? null : handler);
{noformat}

It would be nice to suppress these using the {{-XDignore.symbol.file=true}} javac argument ([1|http://stackoverflow.com/questions/4065401/using-internal-sun-classes-with-javac]) to remove noise from the build output.  Looks like the only way to do this is to fork the javac compiler from gradle ([2|https://discuss.gradle.org/t/passing-arguments-to-compiler-and-javadoc/1661]) and add a compiler arg:

{noformat}
options.fork = true
options.forkOptions.executable = 'javac'
options.compilerArgs << '-XDignore.symbol.file'
{noformat}

I'm not sure it's worth the performance hit of forking javac to suppress the warnings.

Of course, we will need to address usage of these API's in Java9 as we will not have access to internal JDK classes (due to Project Jigsaw).





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