Stas- Is it possible to paste the output from the following command on both your DataNode and NameNode?
% route -v -n -Matt On Wed, Apr 22, 2009 at 4:36 PM, Stas Oskin <stas.os...@gmail.com> wrote: > Hi. > > The way to diagnose this explicitly is: > > 1) on the server machine that should be accepting connections on the > port, > > telnet localhost PORT, and telnet IP PORT you should get a connection, if > > not then the server is not binding the port. > > 2) on the remote machine verify that you can communicate to the server > > machine via normal tools such as ssh and or ping and or traceroute, using > > the IP address from the error message in your log file > > 3) on the remote machine run telnet IP PORT. if (1) and (2) succeeded and > > (3) does not, then there is something blocking packets for the port range > > in > > question. If (3) does succeed then there is some probably interesting > > problem. > > > > Tried in step 3 to telnet both the 50010 and the 8010 ports of the > problematic datanode - both worked. > > I agree there is indeed an interesting problem :). Question is how it can > be > solved. > > Thanks. >
