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From 孔令华 <>
Subject Re: tool to locate all replica of one key
Date Wed, 16 Dec 2009 07:28:53 GMT
Hi all,

I have the similar question.

After killing one of the node of the cluster, I find that only the node's
status changed: from "Up" to "Down". But all the data of the node left
unchanged according to the "Load" field of the nodeprobe's output info.

According to the Dynamo paper, when a node failed,  its neighbors should
change their data topology and ensure the number of replicas. How does
Cassandra ensure that?

2009/12/16 <>

> Hello guys:
> I have some stupid question to ask...
> 1. Does anyone know how to locate all replica(on which node) of one key
> (for monitor purpose)? Or any API can use?
> 2. If one node down, can cassandra re-replicate missing rows automatically?
> Or any utils can do it on demand?
> 2. If one node added, can cassandra re-balance automatically? Or any utils
> can do it on demand?
> Thanks very much!!
> ---------END----------

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