java.lang.UnsupportedClassVersionError: hadoop1/WordCount : Unsupported major.minor version 52.0

kishorer.in | 2 months ago
  1. 0

    Running a Wordcount Mapreduce example in Hadoop 2.4.1 Single-node Cluster in Ubuntu 14.04 (64-bit) | Explore. Learn. Spread.

    kishorer.in | 1 year ago
    java.lang.UnsupportedClassVersionError: hadoop1/WordCount : Unsupported major.minor version 52.0
  2. 0

    Running a Wordcount Mapreduce example in Hadoop 2.4.1 Single-node Cluster in Ubuntu 14.04 (64-bit)Explore. Learn. Spread. | Explore. Learn. Spread.

    kishorer.in | 2 months ago
    java.lang.UnsupportedClassVersionError: hadoop1/WordCount : Unsupported major.minor version 52.0
  3. 0

    Exception in thread "main" java.lang.UnsupportedClassVersionError, Unsupported major.minor version 52.0

    Stack Overflow | 3 years ago | georgiana_e
    java.lang.UnsupportedClassVersionError: WordCount : Unsupported major.minor version 52.0
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  5. 0

    Running Hadoop Map Reduce Job, Error: Unsupported major.minor version 51.0

    Stack Overflow | 3 years ago | Hi_Im_Tim
    java.lang.UnsupportedClassVersionError: mapReduce/Tes tXMLConfig : Unsupported major.minor version 51.0
  6. 0

    UnsupportedClassVersionError on hadoop with no apparent change of version

    Stack Overflow | 2 years ago | Axel Magnuson
    java.lang.UnsupportedClassVersionError: infolab/social/spam/FeatureApp : Unsupported major.minor version 51.0

  1. kid 4 times, last 5 months ago
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Root Cause Analysis

  1. java.lang.UnsupportedClassVersionError

    hadoop1/WordCount : Unsupported major.minor version 52.0

    at java.lang.ClassLoader.defineClass1()
  2. Java RT
    Class.forName
    1. java.lang.ClassLoader.defineClass1(Native Method)
    2. java.lang.ClassLoader.defineClass(ClassLoader.java:800)
    3. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    4. java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    5. java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    6. java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    7. java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    8. java.security.AccessController.doPrivileged(Native Method)
    9. java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    10. java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    11. java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    12. java.lang.Class.forName0(Native Method)
    13. java.lang.Class.forName(Class.java:274)
    13 frames
  3. Hadoop
    RunJar.main
    1. org.apache.hadoop.util.RunJar.main(RunJar.java:153)
    1 frame