java.lang.NoClassDefFoundError: org/apache/hadoop/fs/CanUnbuffer

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Root Cause Analysis

  1. java.lang.ClassNotFoundException

    org.apache.hadoop.fs.CanUnbuffer

    at java.net.URLClassLoader$1.run()
  2. Java RT
    ClassLoader.loadClass
    1. java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    2. java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    3. java.security.AccessController.doPrivileged(Native Method)
    4. java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    5. java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    6. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    7. java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    8. java.lang.ClassLoader.defineClass1(Native Method)
    9. java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    10. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    11. java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
    12. java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    13. java.net.URLClassLoader$1.run(URLClassLoader.java:367)
    14. java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    15. java.security.AccessController.doPrivileged(Native Method)
    16. java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    17. java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    18. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    19. java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    19 frames
  3. Apache Hadoop HDFS
    DistributedFileSystem.initialize
    1. org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
    1 frame
  4. Hadoop
    FileSystem.get
    1. org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2596)
    2. org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:91)
    3. org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2630)
    4. org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2612)
    5. org.apache.hadoop.fs.FileSystem.get(FileSystem.java:370)
    6. org.apache.hadoop.fs.FileSystem.get(FileSystem.java:169)
    6 frames
  5. com.newspace
    HDFSDemo.main
    1. com.newspace.HDFSDemo.init(HDFSDemo.java:33)
    2. com.newspace.HDFSDemo.main(HDFSDemo.java:86)
    2 frames