Akshat-Jain commented on code in PR #17038: URL: https://github.com/apache/druid/pull/17038#discussion_r1793802551
########## processing/src/main/java/org/apache/druid/query/operator/GlueingPartitioningOperator.java: ########## @@ -0,0 +1,279 @@ +/* + * 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.druid.query.operator; + +import org.apache.druid.error.InvalidInput; +import org.apache.druid.query.rowsandcols.ConcatRowsAndColumns; +import org.apache.druid.query.rowsandcols.LimitedRowsAndColumns; +import org.apache.druid.query.rowsandcols.RowsAndColumns; +import org.apache.druid.query.rowsandcols.column.Column; +import org.apache.druid.query.rowsandcols.column.ColumnAccessor; +import org.apache.druid.query.rowsandcols.semantic.ClusteredGroupPartitioner; +import org.apache.druid.query.rowsandcols.semantic.DefaultClusteredGroupPartitioner; + +import java.io.Closeable; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Iterator; +import java.util.List; +import java.util.NoSuchElementException; +import java.util.concurrent.atomic.AtomicReference; + +/** + * This glueing partitioning operator is supposed to continuously receive data, and output batches of partitioned RACs. + * It maintains a last-partitioning-boundary of the last-pushed-RAC, and attempts to glue it with the next RAC it receives, + * ensuring that partitions are handled correctly, even across multiple RACs. + * <p> + * Additionally, this assumes that data has been pre-sorted according to the partitioning columns. + */ +public class GlueingPartitioningOperator extends AbstractPartitioningOperator +{ + private final int maxRowsMaterialized; + private RowsAndColumns previousRac; + + private static final int MAX_ROWS_MATERIALIZED_NO_LIMIT = -1; + + public GlueingPartitioningOperator( + Operator child, + List<String> partitionColumns + ) + { + this(child, partitionColumns, MAX_ROWS_MATERIALIZED_NO_LIMIT); + } + + public GlueingPartitioningOperator( + Operator child, + List<String> partitionColumns, + int maxRowsMaterialized Review Comment: Will change to Integer. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
