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From "kuromatsu nobuyuki (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-4132) Spark uses incompatible HDFS API
Date Wed, 29 Oct 2014 09:08:33 GMT
kuromatsu nobuyuki created SPARK-4132:
-----------------------------------------

             Summary: Spark uses incompatible HDFS API
                 Key: SPARK-4132
                 URL: https://issues.apache.org/jira/browse/SPARK-4132
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 1.1.0
         Environment: Spark1.1.0 on Hadoop1.2.1
CentOS 6.3 64bit
            Reporter: kuromatsu nobuyuki
            Priority: Minor


When I enable event logging and set it to output to HDFS, initialization fails with 'java.lang.ClassNotFoundException'
(see trace below).

I found that an API incompatibility in org.apache.hadoop.fs.permission.FsPermission between
Hadoop 1.0.4 and Hadoop 1.1.0 (and above) causes this error (org.apache.hadoop.fs.permission.FsPermission$2
is used in 1.0.4 but doesn't exist in my 1.2.1 environment).

I think that the Spark jar file pre-built for Hadoop1.X should be built on Hadoop Stable version(Hadoop
1.2.1).


2014-10-24 10:43:22,893 INFO org.apache.hadoop.ipc.Server: IPC Server listener on 9000: 
readAndProcess threw exception java.lang.RuntimeException: 
readObject can't find class org.apache.hadoop.fs.permission.FsPermission$2. Count of bytes
read: 0
java.lang.RuntimeException: readObject can't find class org.apache.hadoop.fs.permission.FsPermission$2
        at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:233)
        at org.apache.hadoop.ipc.RPC$Invocation.readFields(RPC.java:106)
        at org.apache.hadoop.ipc.Server$Connection.processData(Server.java:1347)
        at org.apache.hadoop.ipc.Server$Connection.processOneRpc(Server.java:1326)
        at org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:1226)
        at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:577)
        at org.apache.hadoop.ipc.Server$Listener$Reader.run(Server.java:384)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.fs.permission.FsPermission$2
        at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:270)
        at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:810)
        at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:231)
        ... 9 more





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