The read and write timeout values do this today. https://github.com/apache/cassandra/blob/trunk/conf/cassandra.yaml#L920-L943
On Tue, Oct 12, 2021 at 9:53 AM S G <sg.online.em...@gmail.com> wrote: > Hello, > > Is there a way to stop long running queries in Cassandra (versions 3.11.x > or 4.x) ? > The use-case is to have some kind of a circuit breaker based on query-time > that has exceeded the client's SLAs. > Example: If server response is useless to the client after 10 ms, then we > could > have a *query_killing_timeout* set to 15 ms (where additional 5ms allows > for some buffer). > And when that much time has elapsed, Cassandra will kill the query > execution automatically. > > If this is not possible in Cassandra currently, any chance we can do it > outside of Cassandra, like > a shell script that monitors such long running queries (through users > table etc) and kills the > OS-thread responsible for that query (Looks unsafe though as that might > leave the DB in an inconsistent state) ? > > We are trying this as a proactive measure to safeguard our clusters from > any rogue queries fired accidentally or maliciously. > > Thanks ! > >
