Mutation messages dropped

[Raveendran, Varsha IN BLR STS]

Hello,

I am writing around 10Million records continuously into a single node Cassandra 
(2.0.5) .
In the Cassandra log file I see an entry "272 MUTATION messages dropped in last 
5000ms" . Does this mean that 272 records were not written successfully?

Thanks,
Varsha