How are you loading the data? I mean, what insert method are you using? On Thu, Sep 24, 2015 at 9:58 PM, Benyi Wang <bewang.t...@gmail.com> wrote:
> I have a cassandra cluster provides data to a web service. And there is a > daily batch load writing data into the cluster. > > - Without the batch loading, the service’s Latency 99thPercentile is > 3ms. But during the load, it jumps to 90ms. > - I checked cassandra keyspace’s ReadLatency.99thPercentile, which > jumps to 1ms from 600 microsec. > - The service’s cassandra java driver request 99thPercentile was 90ms > during the load > > The java driver took the most time. I knew the Cassandra servers are busy > in writing, but I want to know what kinds of metrics can identify where is > the bottleneck so that I can tune it. > > I’m using Cassandra 2.1.8 and Cassandra Java Driver 2.1.5. > >
