hadoop AppToFlowTable 源码
haddop AppToFlowTable 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/apptoflow/AppToFlowTable.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.apptoflow;
import org.apache.hadoop.yarn.server.timelineservice.storage.common.BaseTable;
/**
* The app_flow table as column families mapping. Mapping stores
* appId to flowName and flowRunId mapping information
*
* Example app_flow table record:
*
* <pre>
* |--------------------------------------|
* | Row | Column Family |
* | key | mapping |
* |--------------------------------------|
* | appId | flow_name!cluster1: |
* | | foo@daily_hive_report |
* | | |
* | | flow_run_id!cluster1: |
* | | 1452828720457 |
* | | |
* | | user_id!cluster1: |
* | | admin |
* | | |
* | | flow_name!cluster2: |
* | | bar@ad_hoc_query |
* | | |
* | | flow_run_id!cluster2: |
* | | 1452828498752 |
* | | |
* | | user_id!cluster2: |
* | | joe |
* | | |
* |--------------------------------------|
* </pre>
*
* It is possible (although unlikely) in a multi-cluster environment that there
* may be more than one applications for a given app id. Different clusters are
* recorded as different sets of columns.
*/
public final class AppToFlowTable extends BaseTable<AppToFlowTable> {
}
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