hadoop EventColumnName 源码
haddop EventColumnName 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-common/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/EventColumnName.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.yarn.server.timelineservice.storage.common;
/**
* Encapsulates information about Event column names for application and entity
* tables. Used while encoding/decoding event column names.
*/
public class EventColumnName {
private final String id;
private final Long timestamp;
private final String infoKey;
private final KeyConverter<EventColumnName> eventColumnNameConverter =
new EventColumnNameConverter();
public EventColumnName(String id, Long timestamp, String infoKey) {
this.id = id;
this.timestamp = timestamp;
this.infoKey = infoKey;
}
public String getId() {
return id;
}
public Long getTimestamp() {
return timestamp;
}
public String getInfoKey() {
return infoKey;
}
/**
* @return a byte array with each components/fields separated by
* Separator#VALUES. This leads to an event column name of the form
* eventId=timestamp=infokey. If both timestamp and infokey are null,
* then a qualifier of the form eventId=timestamp= is returned. If
* only infokey is null, then a qualifier of the form eventId= is
* returned. These prefix forms are useful for queries that intend to
* retrieve more than one specific column name.
*/
public byte[] getColumnQualifier() {
return eventColumnNameConverter.encode(this);
}
}
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hadoop EventColumnNameConverter 源码
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