Errr really? Well shipping a bunch of hard drives should be faster.
J-D On Apr 23, 2011 12:17 AM, "Jonathan Disher" <jdis...@parad.net> wrote: > Aha, that works. > > Any ideas what kind of throughput I can expect, or suggestions for making this run as fast as possible? Obviously exact numbers will depend on cluster config, I won't bore you with the details, but... 10mbit? 100mbit? A gigabit? I've got about 112TB of data to move from the East coast to the West coast, and sooner would be better than later :) > > -j > > On Apr 22, 2011, at 10:38 PM, Jean-Daniel Cryans wrote: > >> See "Copying between versions of HDFS": >> http://hadoop.apache.org/common/docs/r0.20.2/distcp.html#cpver >> >> J-D >> >> On Fri, Apr 22, 2011 at 10:37 PM, Jonathan Disher <jdis...@parad.net> wrote: >>> I have an existing cluster running hadoop-0.20.1, and I am migrating most of the data to a new cluster running -0.20.2. I am seeing this in the namenode logs when I try to run a distcp: >>> >>> @400000004db263bf29c77134 WARN ipc.Server: Incorrect header or version mismatch from newNN:46111 got version 4 expected version 3 >>> 2011-04-23 05:30:55,999 WARN org.apache.hadoop.ipc.Server: Incorrect header or version mismatch from oldNN:48750 got version 3 expected version 4 >>> >>> When I run my distcp, on either side, it dies with a java.io.IOException/java.io.EOFException. >>> >>> Ideas? Am I screwed? I really don't want to drop my new cluster down to 0.20.1. >>> >>> -j >
