[jira] [Created] (SPARK-17421) Warnings about "MaxPermSize" parameter when building with Maven and Java 8

["Frederick Reiss (JIRA)" <ji...@apache.org>]

Frederick Reiss created SPARK-17421:
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             Summary: Warnings about "MaxPermSize" parameter when building with Maven and Java 8
                 Key: SPARK-17421
                 URL: https://issues.apache.org/jira/browse/SPARK-17421
             Project: Spark
          Issue Type: Bug
          Components: Build
            Reporter: Frederick Reiss
            Priority: Minor


When building Spark with {{build/mvn}} or {{dev/run-tests}}, a Java warning appears repeatedly on STDERR:
{{OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=512M; support was removed in 8.0}}

This warning is due to {{build/mvn}} adding the {{-XX:MaxPermSize=512M}} option to {{MAVEN_OPTS}}. When compiling with Java 7, this parameter is essential. With Java 8, the parameter leads to the warning above.

Because {{build/mvn}} adds {{MaxPermSize}} to {{MAVEN_OPTS}}, even if that environment variable doesn't contain the option, setting {{MAVEN_OPTS}} to a string that does not contain {{MaxPermSize}} has no effect.



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