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From ChingShen <>
Subject Re: Some questions about the write operation and hinted handoff
Date Fri, 09 Jul 2010 03:45:02 GMT
On Fri, Jul 9, 2010 at 4:32 AM, Jonathan Ellis <> wrote:
> If the coordinator knows it can't achieve the requested CL it won't do
> any writes, hinted or otherwise, and will immediately report
> UnavailableException to the client.

> To summarize: hinted writes are only generated when Cassandra (a)
> knows a target is down ahead of time and (b) still has enough UP
> targets to satisfy the requested CL.

Ok, If so, I suppose that A sends requests to B, C and D nodes(RF=3) at *
CL.QUORUM*, but D is down, then return success message to the client, and* A
write a hint to E node*? until D comes back up then E forwards the data to



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