eolivelli commented on code in PR #1961:
URL: https://github.com/apache/zookeeper/pull/1961#discussion_r1065879455


##########
zookeeper-server/src/main/java/org/apache/zookeeper/server/ZooKeeperServer.java:
##########
@@ -1151,6 +1213,9 @@ protected void setLocalSessionFlag(Request si) {
     }
 
     public void submitRequest(Request si) {
+        if (state == State.MAINTENANCE) {
+            throw new IllegalStateException("Zookeeper server is in 
maintenance state");
+        }

Review Comment:
   you are right @anmolnar 
   thanks for your clarification.
   
   we could have a similar loop here
   
   ```
   while (state == State.MAINTENANCE) {
       wait(1000);
   }
   ```



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