Edge Node/Client Unable To Access HDFS When NameNode Resides on a Particular Node of BDA (Doc ID 2018906.1)

Last updated on OCTOBER 11, 2016

Applies to:

Big Data Appliance Integrated Software - Version 4.1.0 and later
Linux x86-64

Symptoms

On Oracle Big Data Appliance (BDA), when Active Namenode(NN) resides on BDA node02 then hdfs commands from Client fail with below error.

java.net.ConnectException: Call From to :8020
 failed on connection exception: java.net.ConnectException: Connection refused;

Further investigation shows NN on node02 can only be accessed using Infiniband IP and not Ethernet IP.



Cause

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