[SPARK-8574] org/apache/spark/unsafe doesn't honor the java source/target versions

Author: Tom Graves

unsafe/pom.xml

@@ -83,13 +83,19 @@
             <javacArgs>
               <!-- This option is needed to suppress warnings from sun.misc.Unsafe usage -->
               <javacArg>-XDignore.symbol.file</javacArg>
+              <javacArg>-source</javacArg>
+              <javacArg>${java.version}</javacArg>
+              <javacArg>-target</javacArg>
+              <javacArg>${java.version}</javacArg>
             </javacArgs>
           </configuration>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-compiler-plugin</artifactId>
           <configuration>
+            <source>${java.version}</source>
+            <target>${java.version}</target>
             <compilerArgs>
               <!-- This option is needed to suppress warnings from sun.misc.Unsafe usage -->
               <arg>-XDignore.symbol.file</arg>