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From Wei Zhu <wz1...@yahoo.com>
Subject Re: General question regarding bootstrap and nodetool repair
Date Thu, 31 Jan 2013 23:14:59 GMT
Thanks Rob. I think you are right on it.

Here is what I found:

https://github.com/apache/cassandra/blob/cassandra-1.1.0/src/java/org/apache/cassandra/dht/RangeStreamer.java#L140


It sorts the end point by proximity and in 

https://github.com/apache/cassandra/blob/cassandra-1.1.0/src/java/org/apache/cassandra/dht/RangeStreamer.java#L171


It fetches the data from the only one source.

That answers my question. So we will have to run repair after the bootstrap to make sure the
consistency. 

Thanks.
-Wei



________________________________
 From: Rob Coli <rcoli@palominodb.com>
To: user@cassandra.apache.org 
Sent: Thursday, January 31, 2013 1:50 PM
Subject: Re: General question regarding bootstrap and nodetool repair
 
On Thu, Jan 31, 2013 at 12:19 PM, Wei Zhu <wz1975@yahoo.com> wrote:
> But I am still not sure how about the my first question regarding the
> bootstrap, anyone?

As I understand it, bootstrap occurs from a single replica. Which
replica is chosen is based on some internal estimation of which is
closest/least loaded/etc. But only from a single replica, so in RF=3,
in order to be consistent with both you still have to run a repair.

=Rob

-- 
=Robert Coli
AIM&GTALK - rcoli@palominodb.com
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