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From Fatih Haltas <fatih.hal...@nyu.edu>
Subject Re: Trouble in running MapReduce application
Date Sat, 23 Feb 2013 11:15:06 GMT
Hi again,

Thanks for your help but now, I am struggling with the same problem on a
machine. As the preivous problem, I just decrease the Java version by Java
6, but this time I could not solve the problem.

those are outputs that may explain the situation:
---------------------------------------------------------------------------------------------------------------------------------------------
1. I could not run my own code, to check the system I just tried to run
basic wordcount example without any modification, except package info.
**************************************************
COMMAND EXECUTED: hadoop jar my.jar org.myorg.WordCount NetFlow NetFlow.out
Warning: $HADOOP_HOME is deprecated.

Exception in thread "main" java.lang.UnsupportedClassVersionError:
org/myorg/WordCount : Unsupported major.minor version 51.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
        at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:266)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
**************************************************************************************
2. Java version:
********************************
COMMAND EXECUTED: java -version
java version "1.6.0_24"
OpenJDK Runtime Environment (IcedTea6 1.11.6)
(rhel-1.33.1.11.6.el5_9-x86_64)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
**********************************
3. JAVA_HOME variable:
**********************************
COMMAND EXECUTED: echo $JAVA_HOME
/usr/lib/jvm/jre-1.6.0-openjdk.x86_64
********************************************
4. HADOOP version:
*******************************************
COMMAND EXECUTED: hadoop version
Warning: $HADOOP_HOME is deprecated.

Hadoop 1.0.4
Subversion
https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.0 -r
1393290
Compiled by hortonfo on Wed Oct  3 05:13:58 UTC 2012
>From source with checksum fe2baea87c4c81a2c505767f3f9b71f4
********************************************************

Are these still incompatible with eachother? (Hadoop version and java
version)


Thank you very much.


On Tue, Feb 19, 2013 at 10:26 PM, Fatih Haltas <fatih.haltas@nyu.edu> wrote:

> Thank you all very much
>
> 19 Şubat 2013 Salı tarihinde Harsh J adlı kullanıcı şöyle yazdı:
>
>> Oops. I just noticed Hemanth has been answering on a dupe thread as
>> well. Lets drop this thread and carry on there :)
>>
>> On Tue, Feb 19, 2013 at 11:14 PM, Harsh J <harsh@cloudera.com> wrote:
>> > Hi,
>> >
>> > The new error usually happens if you compile using Java 7 and try to
>> > run via Java 6 (for example). That is, an incompatibility in the
>> > runtimes for the binary artifact produced.
>> >
>> > On Tue, Feb 19, 2013 at 10:09 PM, Fatih Haltas <fatih.haltas@nyu.edu>
>> wrote:
>> >> Thank you very much Harsh,
>> >>
>> >> Now, as I promised earlier I am much obliged to you.
>> >>
>> >> But, now I solved that problem by just changing the directories then
>> again
>> >> creating a jar file of org. but I am getting this error:
>> >>
>> >> 1.) What I got
>> >>
>> ------------------------------------------------------------------------------
>> >> [hadoop@ADUAE042-LAP-V flowclasses_18_02]$ hadoop jar flow19028pm.jar
>> >> org.myorg.MapReduce /home/hadoop/project/hadoop-data/NetFlow 19_02.out
>> >> Warning: $HADOOP_HOME is deprecated.
>> >>
>> >> Exception in thread "main" java.lang.UnsupportedClassVersionError:
>> >> org/myorg/MapReduce : Unsupported major.minor version 51.0
>> >>         at java.lang.ClassLoader.defineClass1(Native Method)
>> >>         at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
>> >>         at
>> >> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
>> >>         at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
>> >>         at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
>> >>         at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
>> >>         at java.security.AccessController.doPrivileged(Native Method)
>> >>         at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>> >>         at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
>> >>         at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
>> >>         at java.lang.Class.forName0(Native Method)
>> >>         at java.lang.Class.forName(Class.java:266)
>> >>         at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
>> >>
>> >> 2.) How I create my jar
>> >>
>> -------------------------------------------------------------------------------------
>> >> [hadoop@ADUAE042-LAP-V flowclasses_18_02]$ jar cvf flow19028pm.jar org
>> >> added manifest
>> >> adding: org/(in = 0) (out= 0)(stored 0%)
>> >> adding: org/myorg/(in = 0) (out= 0)(stored 0%)
>> >> adding: org/myorg/MapReduce$FlowPortReducer.class(in = 1661) (out=
>> >> 690)(deflated 58%)
>> >> adding: org/myorg/MapReduce.class(in = 1587) (out= 903)(deflated 43%)
>> >> adding: org/myorg/MapReduce$FlowPortMapper.class(in = 1874) (out=
>> >> 823)(deflated 56%)
>> >>
>> >> 3.) Content of my jar file
>> >>
>> ---------------------------------------------------------------------------------------
>> >> [hadoop@ADUAE042-LAP-V flowclasses_18_02]$ jar tf flow19028pm.jar
>> >> META-INF/
>> >> META-INF/MANIFEST.MF
>> >> org/
>> >> org/myorg/
>> >> org/myorg/MapReduce$FlowPortReducer.class
>> >> org/myorg/MapReduce.class
>> >> org/myorg/MapReduce$FlowPortMapper.class
>> >>
>> -----------------------------------------------------------------------------------------
>> >>
>> >>
>> >> Thank you very much.
>> >>
>> >>
>> >> On Tue, Feb 19, 2013 at 8:20 PM, Harsh J <harsh@cloudera.com> wrote:
>> >>>
>> >>> Your point (4) explains the problem. The jar packed structure should
>> >>> look like the below, and not how it is presently (one extra top level
>> >>> dir is present):
>> >>>
>> >>> META-INF/
>> >>> META-INF/MANIFEST.MF
>> >>> org/
>> >>> org/myorg/
>> >>> org/myorg/WordCount.class
>> >>> org/myorg/WordCount$TokenizerMapper.class
>> >>> org/myorg/WordCount$IntSumReducer.clas--
>> Harsh J
>>
>

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