hadoop ChangeTrackerStatistics 源码
haddop ChangeTrackerStatistics 代码
文件路径：/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/statistics/ChangeTrackerStatistics.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.hadoop.fs.s3a.statistics;
/**
* Interface for change tracking statistics.
*/
public interface ChangeTrackerStatistics {
/**
* A version mismatch was detected.
*/
void versionMismatchError();
/**
* How many version mismatches have occurred.
* @return counter of mismatches.
*/
long getVersionMismatches();
}
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