@@ -30,11 +30,11 @@ public class ThrowExceptionFallbackPolicy implements FallbackPolicy {
   }
 
   @Override
-  public Response getFallbackResponse(Invocation invocation) {
+  public Response getFallbackResponse(Invocation invocation, Throwable error) {
     return Response.failResp(invocation.getInvocationType(),
         BizkeeperExceptionUtils
             .createBizkeeperException(BizkeeperExceptionUtils.SERVICECOMB_BIZKEEPER_FALLBACK,
-                null,
+                error,
                 invocation.getOperationMeta().getMicroserviceQualifiedName()));
   }
 }
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.servicecomb.bizkeeper;

import org.apache.servicecomb.core.Invocation;
import org.apache.servicecomb.swagger.invocation.Response;
import org.springframework.stereotype.Component;

@Component
public class ThrowExceptionFallbackPolicy implements FallbackPolicy {
  private static final String POLICY_NAME = "throwException";

  @Override
  public String name() {
    return POLICY_NAME;
  }

  @Override
  public Response getFallbackResponse(Invocation invocation) {
    return Response.failResp(invocation.getInvocationType(),
        BizkeeperExceptionUtils
            .createBizkeeperException(BizkeeperExceptionUtils.SERVICECOMB_BIZKEEPER_FALLBACK,
                null,
                invocation.getOperationMeta().getMicroserviceQualifiedName()));
  }
}

need change second parameter from null to error of createBizkeeperException, or not? if need, then need add UT and IT for this.