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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: Changing hostnames of tasktracker/datanode nodes - any problems?
Date Tue, 10 Aug 2010 15:59:11 GMT

On Aug 10, 2010, at 7:07 AM, Brian Bockelman wrote:

> Hi Erik,
> You can also do this one-by-one (aka, a rolling reboot).  Shut it down, wait for it to
be recognized as dead, then bring it back up with a new hostname.  It will take a much longer
time, but you won't have any decrease in availability, just some minor decrease in capacity.

... and potentially problems with dfs.hosts.

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