Prevent /_cat/master from getting tripped by the CB (#1036)

_cat/master is a fundamental API to know the master instance in the cluster. Given RestClusterState is exempted from tripping already, doesn't make sense for RestMasterAction to trip

Signed-off-by: Bukhtawar Khan bukhtawa@amazon.com

server/src/main/java/org/opensearch/rest/action/cat/RestMasterAction.java

@@ -79,6 +79,11 @@ public class RestMasterAction extends AbstractCatAction {
         });
     }
 
+    @Override
+    public boolean canTripCircuitBreaker() {
+        return false;
+    }
+
     @Override
     protected Table getTableWithHeader(final RestRequest request) {
         Table table = new Table();