SARA, the Dutch National High Performance Computing (HPC) and e-Science Support Center, is organizing a “Hadoop Hackton“. The event is scheduled for December 7th 2010 to be held at their premises in Amsterdam (Science Park 121). The “hackathon” will be a hands-on introduction to Hadoop. Attendees are invited to come spend a day at SARA [...]

When Installing a Jobtracker of any Hadoop cluster, be careful on how these two files interact each other: /etc/hosts $HADOOP_HOME/conf/mapred-site.xml To make a long story short,  this is very wrong: $>cat /etc/hosts 127.0.0.1           localhost   tophat 192.168.3.60   tophat And, if you resolve to hostname in mapred-site.xml $>cat $HADOOP_HOME/conf/mapred-site.xml <!– Put site-specific property overrides in this file. [...]