github-actions[bot] opened a new issue, #371: URL: https://github.com/apache/incubator-wayang/issues/371
Add load profile estimators https://github.com/apache/incubator-wayang/blob/f68bf88d8cf86f826771ffc74b171d82fcb23f23/wayang-platforms/wayang-jdbc-template/src/main/java/org/apache/wayang/jdbc/operators/SqlToRddOperator.java#L100 ```java /* * 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.wayang.jdbc.operators; import org.apache.spark.api.java.JavaRDD; import org.apache.wayang.basic.data.Record; import org.apache.wayang.core.optimizer.OptimizationContext; import org.apache.wayang.core.plan.wayangplan.UnaryToUnaryOperator; import org.apache.wayang.core.platform.ChannelDescriptor; import org.apache.wayang.core.platform.ChannelInstance; import org.apache.wayang.core.platform.lineage.ExecutionLineageNode; import org.apache.wayang.core.types.DataSetType; import org.apache.wayang.core.util.JsonSerializable; import org.apache.wayang.core.util.Tuple; import org.apache.wayang.core.util.json.WayangJsonObj; import org.apache.wayang.jdbc.channels.SqlQueryChannel; import org.apache.wayang.jdbc.platform.JdbcPlatformTemplate; import org.apache.wayang.spark.channels.RddChannel; import org.apache.wayang.spark.execution.SparkExecutor; import org.apache.wayang.spark.operators.SparkExecutionOperator; import java.sql.Connection; import java.util.Collection; import java.util.Collections; import java.util.Iterator; import java.util.List; import java.util.stream.Collectors; import java.util.stream.StreamSupport; public class SqlToRddOperator extends UnaryToUnaryOperator<Record, Record> implements SparkExecutionOperator, JsonSerializable { private final JdbcPlatformTemplate jdbcPlatform; public SqlToRddOperator(JdbcPlatformTemplate jdbcPlatform) { this(jdbcPlatform, DataSetType.createDefault(Record.class)); } public SqlToRddOperator(JdbcPlatformTemplate jdbcPlatform, DataSetType<Record> dataSetType) { super(dataSetType, dataSetType, false); this.jdbcPlatform = jdbcPlatform; } protected SqlToRddOperator(SqlToRddOperator that) { super(that); this.jdbcPlatform = that.jdbcPlatform; } @Override public List<ChannelDescriptor> getSupportedInputChannels(int index) { return Collections.singletonList(this.jdbcPlatform.getSqlQueryChannelDescriptor()); } @Override public List<ChannelDescriptor> getSupportedOutputChannels(int index) { return Collections.singletonList(RddChannel.UNCACHED_DESCRIPTOR); } @Override public Tuple<Collection<ExecutionLineageNode>, Collection<ChannelInstance>> evaluate( ChannelInstance[] inputs, ChannelInstance[] outputs, SparkExecutor executor, OptimizationContext.OperatorContext operatorContext) { // Cast the inputs and outputs. final SqlQueryChannel.Instance input = (SqlQueryChannel.Instance) inputs[0]; final RddChannel.Instance output = (RddChannel.Instance) outputs[0]; JdbcPlatformTemplate producerPlatform = (JdbcPlatformTemplate) input.getChannel().getProducer().getPlatform(); final Connection connection = producerPlatform .createDatabaseDescriptor(executor.getConfiguration()) .createJdbcConnection(); Iterator<Record> resultSetIterator = new SqlToStreamOperator.ResultSetIterator(connection, input.getSqlQuery()); Iterable<Record> resultSetIterable = () -> resultSetIterator; // Convert the ResultSet to a JavaRDD. JavaRDD<Record> resultSetRDD = executor.sc.parallelize( StreamSupport.stream(resultSetIterable.spliterator(), false).collect(Collectors.toList()), executor.getNumDefaultPartitions() ); output.accept(resultSetRDD, executor); // TODO: Add load profile estimators ExecutionLineageNode queryLineageNode = new ExecutionLineageNode(operatorContext); queryLineageNode.addPredecessor(input.getLineage()); ExecutionLineageNode outputLineageNode = new ExecutionLineageNode(operatorContext); output.getLineage().addPredecessor(outputLineageNode); return queryLineageNode.collectAndMark(); } @Override public boolean containsAction() { return false; } @Override public WayangJsonObj toJson() { return null; } } ``` 62397f497b5acae872a796cd27739ccd938d6efe -- 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]
