RE: 10 nodes how to build the topological graph

Hi Alex, sorry for my fuzzy description. I mean the physical link(network topological structure) for 10 machines. Thank you! -Original Message- From: alo alt [mailto:wget.n...@googlemail.com] Sent: 2012年2月3日 15:56 To: common-user@hadoop.apache.org Subject: Re: 10 nodes how to build the

Problem in reduce phase

hey folks, i m getting this error while running mapreduce and these comes up in reduce phase.. 2012-02-03 16:41:19,780 WARN org.apache.hadoop.mapred.ReduceTask: attempt_201201271626_5282_r_00_0 copy failed: attempt_201201271626_5282_m_07_2 from hadoopdata3 2012-02-03 16:41:19,954 WARN

Problem in reduce phase(critical)

On Fri, Feb 3, 2012 at 4:56 PM, hadoop hive hadooph...@gmail.com wrote: hey folks, i m getting this error while running mapreduce and these comes up in reduce phase.. 2012-02-03 16:41:19,780 WARN org.apache.hadoop.mapred.ReduceTask: attempt_201201271626_5282_r_00_0 copy failed:

Re: Problem in reduce phase(critical)

It says in the logs org.apache.hadoop.mapred.ReduceTask: java.net.ConnectException: Connection refused  You have a network problem. Do you have firewall enabled. Raj and please do not spam the list with the same message.  From: hadoop hive

Re: Execute a Map/Reduce Job Jar from Another Java Program.

It looks like there is something wrong with your configuration where the default file system is coming back as the local file system, but you are passing in an HDFS URI fs.exists(Path), I cannot tell for sure because I don't have access to

Re: Retail receipt analysis

You may want to check out Apache Mahout: http://mahout.apache.org On Fri, Feb 3, 2012 at 10:31 PM, Fabio Pitzolu fabio.pitz...@gmail.com wrote: Hello everyone, I've been asked to prepare a small project for a client, which involves the use of machine learning algorithms, correlation and

Re: Problem in reduce phase

The error message: Caused by: java.net.ConnectException: Connection refused means that there is some problem in communication between the nodes in cluster. On Fri, Feb 3, 2012 at 3:26 AM, hadoop hive hadooph...@gmail.com wrote: hey folks, i m getting this error while running mapreduce and

Re: Retail receipt analysis

You can also use R-hadoop package that allows you to run R statistical algos on hadoop. Thanks, Praveenesh On Fri, Feb 3, 2012 at 10:54 PM, Harsh J ha...@cloudera.com wrote: You may want to check out Apache Mahout: http://mahout.apache.org On Fri, Feb 3, 2012 at 10:31 PM, Fabio Pitzolu

Re: Does Hadoop 0.20.205 and Ganglia 3.1.7 compatible with each other ?

I spent a lot of time to figure it out however i did not find a solution. Problems from the logs pointed me for some bugs in rrdupdate tool, however i tried to solve it with different versions of ganglia and rrdtool but the error is the same. Segmentation fault appears after the following lines,

Re: 10 nodes how to build the topological graph

With 10 machines, if you want, you can just build 1 rack. What you might loose is rack awareness of Hadoop. Meaning all your data will be in one rack, so a rack lose is cluster loss. Network topology depends on the following factors: 1. Your replication factor requirement for HDFS blocks 2. How