Re: Re: Hadoop for perl

[Andreas Papadakis]

Is there any other way to use hadoop with perl?

I read that I can use it with python(using jython)... I tried the example but 
jython cannot find the module org.apache.hadoop.fs...(I dont know much about 
java). Anyone knows where can I find that module and where should I place it??

Also, I tried the java example and I get too many errors....
I used the command
bin/hadoop jar hadoop-*-examples.jar wordcount  mydfs/LICENSE.txt mydfs/a

but I get the following errors:

java.lang.RuntimeException: java.net.SocketTimeoutException: timed out waiting 
for rpc response
        at 
org.apache.hadoop.mapred.JobConf.getWorkingDirectory(JobConf.java:247)
        at org.apache.hadoop.mapred.JobConf.setInputPath(JobConf.java:150)
        at org.apache.hadoop.examples.WordCount.main(WordCount.java:137)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at 
org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
        at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:143)
        at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:40)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
Caused by: java.net.SocketTimeoutException: timed out waiting for rpc response
        at org.apache.hadoop.ipc.Client.call(Client.java:469)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:164)
        at org.apache.hadoop.dfs.$Proxy0.getProtocolVersion(Unknown Source)
        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:248)
        at org.apache.hadoop.dfs.DFSClient.<init>(DFSClient.java:106)
        at 
org.apache.hadoop.dfs.DistributedFileSystem.initialize(DistributedFileSystem.java:65)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:160)
        at org.apache.hadoop.fs.FileSystem.getNamed(FileSystem.java:119)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:91)
        at 
org.apache.hadoop.mapred.JobConf.getWorkingDirectory(JobConf.java:243)

Anyone can help me???
Thank you

Erik Hetzner <[EMAIL PROTECTED]> έγραψε: At Fri, 23 Mar 2007 20:58:38 +0100,
Maximilian SchΓΆfmann  wrote:
>
> > I want to ask if there is an implementation of Hadoop for perl...or
> > something similar to Hadoop for python
>
> Well, there is one for Ruby - at least the MapReduce part: Starfish
>
> http://rufy.com/starfish/doc/

Starfish isnβ&#65533;&#65533;t (or wasnβ&#65533;&#65533;t last time I looked) 
really much like
MapReduce at all.

best,
Erik Hetzner


                
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