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

["Thomas Graves (JIRA)" <ji...@apache.org>]

Thomas Graves created SPARK-8574:
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             Summary: org/apache/spark/unsafe doesn't honor the java source/target versions
                 Key: SPARK-8574
                 URL: https://issues.apache.org/jira/browse/SPARK-8574
             Project: Spark
          Issue Type: Bug
          Components: Build
    Affects Versions: 1.4.0
            Reporter: Thomas Graves


I built spark using jdk8 and the default source compatibility in the pom is 1.6 so I expected to be able to run Spark with jdk7, but if fails because the unsafe code doesn't seem to be honoring the source/target compatibility options set in the top level pom.

Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/spark/unsafe/memory/MemoryAllocator : Unsupported major.minor version 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        at org.apache.spark.SparkEnv$.create(SparkEnv.scala:392)
        at org.apache.spark.SparkEnv$.createExecutorEnv(SparkEnv.scala:211)
        at org.apache.spark.executor.CoarseGrainedExecutorBackend$$anonfun$run$1.apply$mcV$sp(CoarseGrainedExecutorBackend.scala:180)
        at org.apache.spark.deploy.SparkHadoopUtil.runAsSparkUser(SparkHadoopUtil.scala:74)
        at org.apache.spark.executor.CoarseGrainedExecutorBackend$.run(CoarseGrainedExecutorBackend.scala:146)
        at org.apache.spark.executor.CoarseGrainedExecutorBackend$.main(CoarseGrainedExecutorBackend.scala:245)
        at org.apache.spark.executor.CoarseGrainedExecutorBackend.main(CoarseGrainedExecutorBackend.scala)
15/06/23 19:48:24 INFO storage.DiskBlockManager: Shutdown hook called



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