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https://issues.apache.org/jira/browse/HUDI-2376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17408158#comment-17408158
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ASF GitHub Bot commented on HUDI-2376:
--------------------------------------
danny0405 commented on a change in pull request #3573:
URL: https://github.com/apache/hudi/pull/3573#discussion_r700201583
##########
File path:
hudi-flink/src/main/java/org/apache/hudi/sink/append/AppendWriteFunction.java
##########
@@ -0,0 +1,124 @@
+/*
+ * 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.hudi.sink.append;
+
+import org.apache.hudi.client.WriteStatus;
+import org.apache.hudi.sink.StreamWriteOperatorCoordinator;
+import org.apache.hudi.sink.bulk.BulkInsertWriterHelper;
+import org.apache.hudi.sink.common.AbstractStreamWriteFunction;
+import org.apache.hudi.sink.event.WriteMetadataEvent;
+
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.table.data.RowData;
+import org.apache.flink.table.types.logical.RowType;
+import org.apache.flink.util.Collector;
+
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * Sink function to write the data to the underneath filesystem.
+ *
+ * @param <I> Type of the input record
+ * @see StreamWriteOperatorCoordinator
+ */
+public class AppendWriteFunction<I> extends AbstractStreamWriteFunction<I> {
+
+ private static final long serialVersionUID = 1L;
+
+ /**
+ * Helper class for log mode.
+ */
+ private transient BulkInsertWriterHelper writerHelper;
+
+ /**
+ * Table row type.
+ */
+ private final RowType rowType;
+
+ /**
+ * Constructs an AppendWriteFunction.
+ *
+ * @param config The config options
+ */
+ public AppendWriteFunction(Configuration config, RowType rowType) {
+ super(config);
+ this.rowType = rowType;
+ }
+
+ @Override
+ public void open(Configuration parameters) throws IOException {
+ initWriterHelper();
+ }
+
+ @Override
+ public void snapshotState() {
+ // Based on the fact that the coordinator starts the checkpoint first,
+ // it would check the validity.
+ // wait for the buffer data flush out and request a new instant
+ flushData(false);
Review comment:
Should nullify the write helper for next ckp.
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> Add pipeline for Append mode
> ----------------------------
>
> Key: HUDI-2376
> URL: https://issues.apache.org/jira/browse/HUDI-2376
> Project: Apache Hudi
> Issue Type: Wish
> Components: Flink Integration
> Reporter: yuzhaojing
> Assignee: yuzhaojing
> Priority: Major
> Labels: pull-request-available
>
> Add pipeline for Append mode.
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