No, a cluster doesn’t need at least three nodes. According to your logs you experienced a “long JVM pause.” If a node stops responding, it gets kicked out of the cluster. It’s likely you need to tune your garbage collection, though there are other possible causes of long pauses too.
> On 28 Sep 2021, at 00:34, 38797715 <38797...@qq.com> wrote: > > Any feedback?
