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From Patrik Modesto <>
Subject Re: RF=1
Date Wed, 03 Aug 2011 06:18:06 GMT
On Tue, Aug 2, 2011 at 23:10, Jeremiah Jordan
<> wrote:
> If you have RF=1, taking one node down is going to cause 25% of your
> data to be unavailable.  If you want to tolerate a machines going down
> you need to have at least RF=2, if you want to use quorum and have a
> machine go down, you need at least RF=3.

I know I can have RF > 1 but I have limited resources and I don't care
lossing 25% of the data. RF > 1 basicaly means if a node goes down I
have the data elsewhere, but what I need is if node goes down just
ignore its range. I can handle it in my applications using thrift, but
the hadoop-mapreduce can't handle it. It just fails with "Exception in
thread "main" Could not get input splits". Is
there a way to say ignore this range to hadoop?


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