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
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