Re: Error reading task output

2009-04-21 Thread Steve Loughran
Aaron Kimball wrote: Cam, This isn't Hadoop-specific, it's how Linux treats its network configuration. If you look at /etc/host.conf, you'll probably see a line that says "order hosts, bind" -- this is telling Linux's DNS resolution library to first read your /etc/hosts file, then check an exter

Re: Error reading task output

2009-04-21 Thread Steve Loughran
Cam Macdonell wrote: Well, for future googlers, I'll answer my own post. Watch our for the hostname at the end of "localhost" lines on slaves. One of my slaves was registering itself as "localhost.localdomain" with the jobtracker. Is there a way that Hadoop could be made to not be so depe

Re: Error reading task output

2009-04-16 Thread Aaron Kimball
Cam, This isn't Hadoop-specific, it's how Linux treats its network configuration. If you look at /etc/host.conf, you'll probably see a line that says "order hosts, bind" -- this is telling Linux's DNS resolution library to first read your /etc/hosts file, then check an external DNS server. You co

Re: Error reading task output

2009-04-16 Thread Cam Macdonell
Cam Macdonell wrote: Hi, I'm getting the following warning when running the simple wordcount and grep examples. 09/04/15 16:54:16 INFO mapred.JobClient: Task Id : attempt_200904151649_0001_m_19_0, Status : FAILED Too many fetch-failures 09/04/15 16:54:16 WARN mapred.JobClient: Error re