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From Oleksandr Shulgin <>
Subject Re: Aws instance stop and star with ebs
Date Tue, 29 Oct 2019 20:43:43 GMT
On Tue, Oct 29, 2019 at 9:34 PM Rahul Reddy <>

> We have our infrastructure on aws and we use ebs storage . And aws was
> retiring on of the node. Since our storage was persistent we did nodetool
> drain and stopped and start the instance . This caused 500 errors in the
> service. We have local_quorum and rf=3 why does stopping one instance cause
> application to have issues?

Can you still look up what was the underlying error from Cassandra driver
in the application logs?  Was it request timeout or not enough replicas?

For example, if you only had 3 Cassandra nodes, restarting one of them
reduces your cluster capacity by 33% temporarily.


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