JingsongLi commented on code in PR #4614: URL: https://github.com/apache/paimon/pull/4614#discussion_r1865184011
########## paimon-flink/paimon-flink-1.20/src/main/java/org/apache/paimon/flink/source/operator/MonitorSource.java: ########## @@ -0,0 +1,277 @@ +/* + * 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.paimon.flink.source.operator; + +import org.apache.paimon.flink.utils.JavaTypeInfo; +import org.apache.paimon.table.BucketMode; +import org.apache.paimon.table.sink.ChannelComputer; +import org.apache.paimon.table.source.DataSplit; +import org.apache.paimon.table.source.EndOfScanException; +import org.apache.paimon.table.source.ReadBuilder; +import org.apache.paimon.table.source.Split; +import org.apache.paimon.table.source.StreamTableScan; + +import org.apache.flink.api.common.state.CheckpointListener; +import org.apache.flink.api.common.state.ListState; +import org.apache.flink.api.common.state.ListStateDescriptor; +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.api.common.typeutils.TypeSerializer; +import org.apache.flink.api.common.typeutils.base.LongSerializer; +import org.apache.flink.api.java.tuple.Tuple2; +import org.apache.flink.api.java.typeutils.runtime.TupleSerializer; +import org.apache.flink.runtime.state.FunctionInitializationContext; +import org.apache.flink.runtime.state.FunctionSnapshotContext; +import org.apache.flink.streaming.api.checkpoint.CheckpointedFunction; +import org.apache.flink.streaming.api.datastream.DataStream; +import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator; +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; +import org.apache.flink.streaming.api.functions.source.RichSourceFunction; +import org.apache.flink.streaming.api.watermark.Watermark; +import org.apache.flink.table.data.RowData; +import org.apache.flink.util.Preconditions; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.List; +import java.util.NavigableMap; +import java.util.OptionalLong; +import java.util.TreeMap; + +import static org.apache.paimon.table.BucketMode.BUCKET_UNAWARE; + +/** + * This is the single (non-parallel) monitoring task, it is responsible for: + * + * <ol> + * <li>Monitoring snapshots of the Paimon table. + * <li>Creating the {@link Split splits} corresponding to the incremental files + * <li>Assigning them to downstream tasks for further processing. + * </ol> + * + * <p>The splits to be read are forwarded to the downstream {@link ReadOperator} which can have + * parallelism greater than one. + * + * <p>Currently, there are two features that rely on this monitor: + * + * <ol> + * <li>Consumer-id: rely on this function to do aligned snapshot consumption, and ensure that all + * data in a snapshot is consumed within each checkpoint. + * <li>Snapshot-watermark: when there is no watermark definition, the default Paimon table will + * pass the watermark recorded in the snapshot. + * </ol> + */ +public class MonitorSource extends RichSourceFunction<Split> + implements CheckpointedFunction, CheckpointListener { + + private static final long serialVersionUID = 1L; + + private static final Logger LOG = LoggerFactory.getLogger(MonitorSource.class); + + private final ReadBuilder readBuilder; + private final long monitorInterval; + private final boolean emitSnapshotWatermark; + + private volatile boolean isRunning = true; + + private transient StreamTableScan scan; + private transient SourceContext<Split> ctx; + + private transient ListState<Long> checkpointState; + private transient ListState<Tuple2<Long, Long>> nextSnapshotState; + private transient TreeMap<Long, Long> nextSnapshotPerCheckpoint; + + public MonitorSource( + ReadBuilder readBuilder, long monitorInterval, boolean emitSnapshotWatermark) { + this.readBuilder = readBuilder; Review Comment: Can you extract implementation in common, let all flink 1.x share codes. -- 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: issues-unsubscr...@paimon.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
