relax

Author: dnhatn

x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/operator/DriverContext.java

@@ -191,9 +191,6 @@ public void checkForEarlyTermination() {
      * This method should be called when associating this DriverContext with a driver.
      */
     public void initializeEarlyTerminationChecker(Runnable checker) {
-        if (this.earlyTerminationChecker != NO_OP) {
-            throw new IllegalStateException("Early termination checker already initialized");
-        }
         this.earlyTerminationChecker = checker;
     }