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From Srinivas Chamarthi <srinivas.chamar...@gmail.com>
Subject Map Reduce Job fails
Date Fri, 11 Oct 2013 07:22:06 GMT
I have a 2 node cluster (HDP1, HDP2) as mentioned below.

HDP 1

1.name node ,
2.data node,
3. node manager
4. resource manager

HDP 2

1. node manager
2. data node

when I submit the map reduce job on HDP1 , the job runs on node HDP2 which
is fine.
But the job fails and in the userlogs/syslogs of the application on HDP2 I
am finding an exception


2013-10-11 03:10:35,700 INFO [AsyncDispatcher event handler]
org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl: Diagnostics
report from attempt_1381261418535_0021_m_000000_0: Container launch failed
for container_1381261418535_0021_01_000003 : java.net.ConnectException:
Call From 249/172.xy.ab.249 to ip-172-xy-ab-249.localdomain:37785 failed on
connection exception: java.net.ConnectException: Connection refused; For
more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)


looks like it is trying to connect to same server but for some reason it
cannot find something it is looking for on that port.


any idea what I am missing ?

1. one may be I am missing to run some process on HDP2
2. or not providing the right configuration to find a server on HDP1.

any help is greatly appreciated

thx
srinivas

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