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Reputation: 1307

Cassandra Consistency levels

I just want to reduce the consistency level while retrying during an unavailability exception. My current configurations are.

   RF=8
   CL=QUORUM  ((8/2)+1)=5;

I have found only these levels,to where I can reduce it.

     ConsistencyLevel.THREE
     ConsistencyLevel.TWO
     ConsistencyLevel.ONE.

How can I give ConsistencyLevel level of 4 ?

Any help is appreciated.

Thanks.

Upvotes: 2

Views: 488

Answers (1)

Carlo Bertuccini
Carlo Bertuccini

Reputation: 20021

You can not set the ConsistencyLevel of 4. CL 2 and 3 are amenities that should deal with most of situations.

If you have a RF of 8 and you can't get a quorum w/r operation due to unavailable exception it means you have at least 4 of the 8 nodes handling the token offline/unreachable. Rather than thinking about degrading the CL to 4 I'd just use a ConsistencyLevel.THREE and immediately fix the problem in the cluster.

HTH, Cheers

Carlo

Upvotes: 1

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