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Explain about the process of inter cluster data copying?

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Explain about the process of inter cluster data copying?
posted Dec 22, 2016 by Karthick.c

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1 Answer

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HDFS provides a distributed data copying facility through the DistCP from source to destination. If this data copying is within the hadoop cluster then it is referred to as inter cluster data copying. DistCP requires both source and destination to have a compatible or same version of hadoop.

answer Dec 23, 2016 by Dominic
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I have a test cluster of two machines, on both of them hadoop is installed. I have configured the hadoop cluster but on admin UI (as in the below picture) I see that two nodes are running on the same master machine, and that the other machine has no Hadoop node.

On master machine following services are running:

~$ jps 26310 ResourceManager 27593 Jps 26216 DataNode 26135 NameNode 26557 NodeManager 26701 JobHistoryServer 

On the slave machine:

~$ jps 2614 DataNode 2920 Jps 2707 NodeManager 

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