Github user yew1eb commented on a diff in the pull request:
https://github.com/apache/flink/pull/5374#discussion_r165032079
--- Diff:
flink-connectors/flink-connector-elasticsearch5.3/src/main/java/org/apache/flink/streaming/connectors/elasticsearch53/BulkProcessorIndexer.java
---
@@ -0,0 +1,57 @@
+/*
+ * 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.streaming.connectors.elasticsearch53;
+
+import org.apache.flink.streaming.connectors.elasticsearch.RequestIndexer;
+
+import org.elasticsearch.action.ActionRequest;
+import org.elasticsearch.action.DocWriteRequest;
+import org.elasticsearch.action.bulk.BulkProcessor;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * Implementation of a {@link RequestIndexer}, using a {@link
BulkProcessor}.
+ * {@link ActionRequest ActionRequests} will be converted to {@link
DocWriteRequest}
+ * and will be buffered before sending a bulk request to the Elasticsearch
cluster.
+ */
+public class BulkProcessorIndexer implements RequestIndexer {
+
+ private final BulkProcessor bulkProcessor;
+ private final boolean flushOnCheckpoint;
+ private final AtomicLong numPendingRequestsRef;
+
+ public BulkProcessorIndexer(BulkProcessor bulkProcessor,
+ boolean
flushOnCheckpoint,
+ AtomicLong
numPendingRequests) {
+ this.bulkProcessor = bulkProcessor;
+ this.flushOnCheckpoint = flushOnCheckpoint;
+ this.numPendingRequestsRef = numPendingRequests;
+ }
+
+ @Override
+ public void add(ActionRequest... actionRequests) {
+ for (ActionRequest actionRequest : actionRequests) {
+ if (flushOnCheckpoint) {
+ numPendingRequestsRef.getAndIncrement();
+ }
+ this.bulkProcessor.add((DocWriteRequest) actionRequest);
--- End diff --
Are you sure that `ActionRequest` type can be cast to `DocWriteRequest`
type?
---
