Hi I am experiencing a lot of tasks failures while running any Hadoop application. In particular, I get the following warnings: Error initializing attempt_201106081500_0018_r_000000_0: java.io.IOException: Could not obtain block: blk_-7386162385184325734_1214 file=/home/hadoop/data/mapred/system/job_201106081500_0018/job.xml
Looking in the forums, it seems it has something to do with /etc/hosts settings, because I cannot also access the jobtracker web interface via the hostname, but can access it via the actual IP address. I set the /etc/hosts in all the VMs as per <ip address> hostname Any idea? Thanks
