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How can I add a new hard disk in an existing HDFS cluster? - HDFS - [mail # user]
...go for ext3 or ext4   On Fri, May 3, 2013 at 8:32 AM, Joarder KAMAL  wrote:  > Hi, > >  I have a running HDFS cluster (Hadoop/HBase) consists of 4 nodes and the ...
   Author: Håvard Wahl Kongsgård , 2013-05-03, 09:58
R environment with Hadoop - HDFS - [mail # user]
...Hi, simpler is always better ...  ...for example if you use hadoop with java http://www.rforge.net/rJava/  ... if you use hadoop with python(pydoop,dumbo) http://rpy.sourceforge.ne...
   Author: Håvard Wahl Kongsgård , 2013-04-14, 06:46
Which hadoop installation should I use on ubuntu server? - HDFS - [mail # user]
...I recommend cloudera's CDH4 on ubuntu 12.04 LTS   On Thu, Mar 28, 2013 at 7:07 AM, David Parks  wrote:  > I’m moving off AWS MapReduce to our own cluster, I’m installing Ha...
   Author: Håvard Wahl Kongsgård , 2013-03-29, 08:21
[expand - 1 more] - Hadoop cluster hangs on big hive job - HDFS - [mail # user]
...Dude I'am not going to read all you log files,  but try to run this as a normal map reduce job, it could be memory related, something wrong with some of the zip files, wrong config etc....
   Author: Håvard Wahl Kongsgård , 2013-03-08, 16:31
[expand - 3 more] - Skipping entire task - HDFS - [mail # user]
...Thanks, I was unaware of mapred.max.map.failures.percent  -Håvard  On Sun, Jan 6, 2013 at 3:46 PM, Harsh J  wrote: > You can use the mapred.max.map.failures.percent and >...
   Author: Håvard Wahl Kongsgård , 2013-01-06, 15:29
Hadoop in Pseudo-Distributed mode on Mac OS X 10.8 - HDFS - [mail # user]
...Pseudo-distributed mode is good for developing and testing hadoop code. But instead of experimenting with hadoop on your mac, I would go for hadoop on EC2. With starcluster http://web.mit.ed...
   Author: Håvard Wahl Kongsgård , 2012-08-31, 07:56
example usage of s3 file system - HDFS - [mail # user]
...see also  http://wiki.apache.org/hadoop/AmazonS3  On Tue, Aug 28, 2012 at 9:14 AM, Chris Collins  wrote: > Hi I am trying to use the Hadoop filesystem abstraction with S3 b...
   Author: Håvard Wahl Kongsgård , 2012-08-29, 07:11
Using Multiple Input format with Hadoop Streaming - HDFS - [mail # user]
...dude preprocess the data!  -Håvard  On Sat, Aug 25, 2012 at 7:48 AM, Siddharth Tiwari  wrote: > > How shall I give multple Inputsand keep multiple mappers in Streaming. ...
   Author: Håvard Wahl Kongsgård , 2012-08-26, 06:29
secondary namenode storage location - HDFS - [mail # user]
...https://ccp.cloudera.com/display/CDHDOC/CDH3+Deployment+on+a+Cluster#CDH3DeploymentonaCluster-ConfiguringtheSecondaryNameNode  fs.checkpoint.dir /cache/hadoop/dfs  fs.checkpoint.e...
   Author: Håvard Wahl Kongsgård , 2012-08-24, 14:44
namenode not starting - HDFS - [mail # user]
...You should start with a reboot of the system.  A lesson to everyone, this is exactly why you should have a secondary name node (http://wiki.apache.org/hadoop/FAQ#What_is_the_purpose_of_...
   Author: Håvard Wahl Kongsgård , 2012-08-24, 12:37