https://community.cloudera.com/t5/Support-Questions/Exception-in-createBlockOutputStream/m-p/24036#M53151 <P>Hello Gautam, thanks for reply.<BR />The problem was in iptables at one of the data nodes.<BR />It's a bit strange, because previous tables were created successfully, but turning iptables off solved the problem.</P> Sat, 24 Jan 2015 21:51:12 GMT ilkar 2015-01-24T21:51:12Z