org.apache.kafka.clients.consumer.LogTruncationException Maven / Gradle / Ivy
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* 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.kafka.clients.consumer;
import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.utils.Utils;
import java.util.Collections;
import java.util.Map;
import java.util.function.Function;
/**
* In the even of unclean leader election, the log will be truncated,
* previously committed data will be lost, and new data will be written
* over these offsets. When this happens, the consumer will detect the
* truncation and raise this exception (if no automatic reset policy
* has been defined) with the first offset to diverge from what the
* consumer read.
*/
public class LogTruncationException extends OffsetOutOfRangeException {
private static final long serialVersionUID = 1L;
private final Map divergentOffsets;
public LogTruncationException(Map divergentOffsets) {
super(Utils.transformMap(divergentOffsets, Function.identity(), OffsetAndMetadata::offset));
this.divergentOffsets = Collections.unmodifiableMap(divergentOffsets);
}
/**
* Get the offsets for the partitions which were truncated. This is the first offset which is known to diverge
* from what the consumer read.
*/
public Map divergentOffsets() {
return divergentOffsets;
}
}