Github user GJL commented on a diff in the pull request:
https://github.com/apache/flink/pull/5487#discussion_r169918959
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/async/AsynchronousOperationInfo.java
---
@@ -0,0 +1,64 @@
+/*
+ * 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.flink.runtime.rest.handler.async;
+
+import
org.apache.flink.runtime.rest.messages.json.SerializedThrowableDeserializer;
+import
org.apache.flink.runtime.rest.messages.json.SerializedThrowableSerializer;
+import org.apache.flink.util.SerializedThrowable;
+
+import
org.apache.flink.shaded.jackson2.com.fasterxml.jackson.annotation.JsonInclude;
+import
org.apache.flink.shaded.jackson2.com.fasterxml.jackson.annotation.JsonProperty;
+import
org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import
org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+import javax.annotation.Nullable;
+
+/**
+ * Basic information object for asynchronous operations.
+ */
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class AsynchronousOperationInfo {
+
+ private static final String FIELD_NAME_FAILURE_CAUSE = "failure-cause";
+
+ @JsonProperty(FIELD_NAME_FAILURE_CAUSE)
+ @JsonSerialize(using = SerializedThrowableSerializer.class)
+ @Nullable
+ private final SerializedThrowable failureCause;
+
+ private AsynchronousOperationInfo(
+ @JsonProperty(FIELD_NAME_FAILURE_CAUSE)
--- End diff --
nit: indentation
---
