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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Question about CL.ZERO
Date Sun, 11 Jul 2010 18:04:09 GMT
On Sun, Jul 11, 2010 at 11:21 AM, ChingShen <chingshenchen@gmail.com> wrote:
> Hi all,
>
>   Does it mean that the coordinator node always return success to the client
> at CL.ZERO?

Yes.

> But if the coordinator node sends a request to a given node
> B(RF=1), then B is down, what happened? The coordinator node will write the
> hint locally?

Sort of: if the coordinator knows when it begins processing the
request that B is down, it will write a hint.  But if it has not yet
detected that B is down, then it will attempt a write.  If the write
times out then no further attempts are made.

-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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