If you are facing a similar issue where the leader alpha service is frequently restarting when a user or application runs a large query, it is possible that you have insufficient resources available to handle the query. For example, if the query is too large or has too many indexes, it may exceed the available resources and cause the cluster to fail. In this situation, the best solution is to shut down the cluster and restart it to recover from the failure. It is also important to ensure that your cluster is properly sized and configured to handle the workload and avoid future failures.