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Does anyone have any advice on administering a large Cassandra cluster (> 50 nodes)?

I am looking at both Riak and Cassandra and need to know the performance and operational characteristics and experiences from real world usage to evaluate these products. I have added a separate question for Riak, but I hope cassandra gets some answers as I "heard" there are alot of large scale users.

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closed as not constructive by Bryan, growse, kce, gWaldo, Michael Hampton May 21 '13 at 23:54

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Define "large". – gekkz Feb 14 '10 at 9:30
Your question is vague. Would you mind giving us a little more to go on? – Patrick R Feb 14 '10 at 13:22
I have amended the question. – Zubair Feb 14 '10 at 13:43

Administering is a large term, I would suggest installing DataStax Ops center that gives you graphical representation of cluster wide and node specific OS load, read, write latencies along with number of read, write requests.

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