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From mehul choube <mcho...@gmail.com>
Subject what happens when a datanode rejoins?
Date Tue, 11 Sep 2012 08:39:45 GMT
Hi,


What happens when an existing (not new) datanode rejoins a cluster for
following scenarios:


a) Some of the blocks it was managing are deleted/modified?

b) The size of the blocks are now modified say from 64MB to 128MB?

c) What if the block replication factor was one (yea not in most
deployments but say in case) so does the namenode recreate a file once the
datanode rejoins?




Thanks,

Mehul

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