hadoop EmptyStorageStatistics 源码
haddop EmptyStorageStatistics 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/EmptyStorageStatistics.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;
import java.util.Collections;
import java.util.Iterator;
/**
* EmptyStorageStatistics is a StorageStatistics implementation which has no
* data.
*/
class EmptyStorageStatistics extends StorageStatistics {
EmptyStorageStatistics(String name) {
super(name);
}
@Override
public Iterator<LongStatistic> getLongStatistics() {
return Collections.emptyIterator();
}
@Override
public Long getLong(String key) {
return null;
}
@Override
public boolean isTracked(String key) {
return false;
}
@Override
public void reset() {
}
}
相关信息
相关文章
hadoop BatchListingOperations 源码
hadoop BatchedRemoteIterator 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
6、 golang
-
7、 openharmony