Github user jose-torres commented on a diff in the pull request: https://github.com/apache/spark/pull/20698#discussion_r171685001 --- Diff: external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaOffsetRangeCalculator.scala --- @@ -0,0 +1,105 @@ +/* + * 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.spark.sql.kafka010 + +import org.apache.kafka.common.TopicPartition + +import org.apache.spark.sql.sources.v2.DataSourceOptions + + +/** + * Class to calculate offset ranges to process based on the the from and until offsets, and + * the configured `minPartitions`. + */ +private[kafka010] class KafkaOffsetRangeCalculator(val minPartitions: Int) { + require(minPartitions >= 0) + + import KafkaOffsetRangeCalculator._ + /** + * Calculate the offset ranges that we are going to process this batch. If `numPartitions` --- End diff -- nit: /s/numPartitions/minPartitions
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