hadoop Summarizer 源码
haddop Summarizer 代码
文件路径：/hadoop-tools/hadoop-gridmix/src/main/java/org/apache/hadoop/mapred/gridmix/Summarizer.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.mapred.gridmix;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapred.gridmix.GenerateData.DataStatistics;
/**
* Summarizes various aspects of a {@link Gridmix} run.
*/
class Summarizer {
private ExecutionSummarizer executionSummarizer;
private ClusterSummarizer clusterSummarizer;
protected static final String NA = "N/A";
Summarizer() {
this(new String[]{NA});
}
Summarizer(String[] args) {
executionSummarizer = new ExecutionSummarizer(args);
clusterSummarizer = new ClusterSummarizer();
}
ExecutionSummarizer getExecutionSummarizer() {
return executionSummarizer;
}
ClusterSummarizer getClusterSummarizer() {
return clusterSummarizer;
}
void start(Configuration conf) {
executionSummarizer.start(conf);
clusterSummarizer.start(conf);
}
/**
* This finalizes the summarizer.
*/
@SuppressWarnings("unchecked")
void finalize(JobFactory factory, String path, long size,
UserResolver resolver, DataStatistics stats, Configuration conf)
throws IOException {
executionSummarizer.finalize(factory, path, size, resolver, stats, conf);
}
/**
* Summarizes the current {@link Gridmix} run and the cluster used.
*/
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append(executionSummarizer.toString());
builder.append(clusterSummarizer.toString());
return builder.toString();
}
}
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