cshuo commented on code in PR #13409: URL: https://github.com/apache/hudi/pull/13409#discussion_r2148946684
########## hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/sink/append/AppendWriteFunctionWithBufferSort.java: ########## @@ -0,0 +1,111 @@ +/* + * 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.flink.table.data.binary.BinaryRowData; +import org.apache.flink.table.runtime.operators.sort.BinaryInMemorySortBuffer; +import org.apache.flink.table.runtime.util.MemorySegmentPool; +import org.apache.flink.util.MutableObjectIterator; +import org.apache.hudi.configuration.FlinkOptions; +import org.apache.hudi.sink.StreamWriteOperatorCoordinator; +import org.apache.hudi.sink.append.sort.RowDataComparator; + +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 org.apache.flink.util.FlinkRuntimeException; +import org.apache.hudi.sink.buffer.MemorySegmentPoolFactory; +import org.apache.hudi.sink.utils.BufferUtils; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; + +/** + * Sink function to write the data to the underneath filesystem with buffer sort + * to improve the parquet compression rate. + * + * <p>The function writes base files directly for each checkpoint, + * the file may roll over when it’s size hits the configured threshold. + * + * @param <T> Type of the input record + * @see StreamWriteOperatorCoordinator + */ +public class AppendWriteFunctionWithBufferSort<T> extends AppendWriteFunction<T> { + private static final Logger LOG = LoggerFactory.getLogger(AppendWriteFunctionWithBufferSort.class); + private final long writebufferSize; + private final RowDataComparator rowDataComparator; + private transient BinaryInMemorySortBuffer buffer; + private transient MemorySegmentPool memorySegmentPool; + + public AppendWriteFunctionWithBufferSort(Configuration config, RowType rowType) { + super(config, rowType); + this.writebufferSize = config.get(FlinkOptions.WRITE_BUFFER_SIZE); + String sortKeys = config.get(FlinkOptions.WRITE_BUFFER_SORT_KEYS); + if (sortKeys == null) { + throw new IllegalArgumentException("Sort keys can't be null for append write with buffer sort."); + } + + this.rowDataComparator = new RowDataComparator(rowType, sortKeys); + } + + @Override + public void open(Configuration parameters) throws Exception { + super.open(parameters); + this.memorySegmentPool = MemorySegmentPoolFactory.createMemorySegmentPool(config); + this.buffer = BufferUtils.createBuffer(rowType, memorySegmentPool, rowDataComparator); + } + + @Override + public void processElement(T value, Context ctx, Collector<Object> out) throws Exception { + RowData data = (RowData) value; + buffer.write(data); + if (buffer.size() >= writebufferSize) { Review Comment: Should we use limitation of memory size based on something like `BufferSizeDetector` instead of records count? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
