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question

adityajain22_141041 avatar image
adityajain22_141041 asked ·

Mean cross-node dropped latency

Finding 100's of INFO message in system.log


RANGE_SLICE messages were dropped in last 5000 ms: 0 internal and 5 cross node. Mean internal dropped latency: 0 ms and Mean cross-node dropped latency: 17248 ms


How This can be fixed and whats the cause

dropped latency
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1 Answer

Erick Ramirez avatar image
Erick Ramirez answered ·

@adityajain22_141041 it means that the nodes are overloaded and cannot keep up with range reads. You need to either throttle the traffic to the cluster or add more nodes to increase the capacity of the cluster. Cheers!

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hi @Erick Ramirez, There is regular load on the cluster and no spike seen on incoming connection.



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Unfortunately, the warning indicates that the replicas have a latency of over 17 seconds for range reads. It can also happen if your application is doing a large (expensive) read request. Cheers!

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