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If the IP address or hostname of a data node changes

Question:

If the IP address or hostname of a data node changes

A.

The namenode updates the mapping between file name and block name

B.

The data in that data node is lost forever

C.

The namenode need not update mapping between file name and block name

D.

There namenode has to be restarted

Answer» c. The namenode need not update mapping between file name and block name

Note: The above multiple-choice question is for all general and Competitive Exams in India