code: @JmxOperation(description = "Forcefully checkpoint all the environments")
      public void checkPointAllEnvironments() {
          synchronized(lock) {
              try {
                  for(Environment environment: environments.values()) {
                      CheckpointConfig checkPointConfig = new CheckpointConfig();
                      checkPointConfig.setForce(true);
                      environment.checkpoint(checkPointConfig);
                  }
              } catch(DatabaseException e) {
                  throw new VoldemortException(e);
              }
          }
      }
docs: Forceful checkpointing