PromQL is powerful, and is able to result in query requests that have very wide range of data fetched and samples processed. Heavy queries can cause: CPU on any query component to be partially exhausted, increasing latency and causing incoming queries to queue up with high chance of time-out. CPU on any query component to be fully exhausted, causing GC to slow down leading to the pod being out-of-memory and killed. Heap memory on any query component to be exhausted, leading to the pod being o...
