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From Daniel Watrous <dwmaill...@gmail.com>
Subject Help troubleshooting multi-cluster setup
Date Wed, 23 Sep 2015 18:58:27 GMT

I have deployed a multi-node cluster with one master and two data nodes.
Here's what jps shows:

hadoop@hadoop-master:~$ jps
24641 SecondaryNameNode
24435 DataNode
24261 NameNode
24791 ResourceManager
25483 Jps
24940 NodeManager

hadoop@hadoop-data1:~$ jps
15556 DataNode
16198 NodeManager
16399 Jps

hadoop@hadoop-data2:~$ jps
16418 Jps
15575 DataNode
16216 NodeManager

When I open the web console, I only see one node running:

Where are the other two nodes? Why don't they show up?

Next I run one of the example scripts

hadoop@hadoop-master:~$ hadoop jar
pi 10 30
Number of Maps  = 10
Samples per Map = 30
Wrote input for Map #0
Wrote input for Map #1
Job Finished in 2.956 seconds
Estimated value of Pi is 3.14146666666666666667

I can't see this anywhere in the web interface. I thought it might show in
the Applications sub-menu. Should I be able to see this? It appears to run


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