oozie与hive的简单案例

最新推荐文章于 2023-02-05 17:50:37 发布

转载最新推荐文章于 2023-02-05 17:50:37 发布 · 174 阅读

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原文链接：http://www.cnblogs.com/xuyou551/p/8059472.html

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#大数据 #数据库

本文介绍如何使用Oozie进行Hive任务的调度，包括配置文件编辑、工作流定义、SQL脚本编写及任务提交等步骤。通过具体实例演示了从准备环境到成功执行的全过程。

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1.把oozie中自带的hive案例拷贝到测试目录 /opt/cdh-5.3.6/oozie-4.0.0-cdh5.3.6/oozie-apps下

2. 编辑 job.properties

 1 #
 2 # Licensed to the Apache Software Foundation (ASF) under one
 3 # or more contributor license agreements.  See the NOTICE file
 4 # distributed with this work for additional information
 5 # regarding copyright ownership.  The ASF licenses this file
 6 # to you under the Apache License, Version 2.0 (the
 7 # "License"); you may not use this file except in compliance
 8 # with the License.  You may obtain a copy of the License at
 9 #
10 #      http://www.apache.org/licenses/LICENSE-2.0
11 #
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
17 #
18 nameNode=hdfs://hadoop:8020
19 jobTracker=hadoop:8032
20 queueName=default
21 oozieAppsRoot=user/root/oozie-apps
22 oozieDataRoot=user/root/oozie/datas
23 
24 oozie.use.system.libpath=true
25 
26 oozie.wf.application.path=${nameNode}/${oozieAppsRoot}/hive-select/
27 
28 outputDir=hive-select/output

3.拷贝hive的配置文件hive-site.xm

4.拷贝mysql的jar包

5.编辑workflow.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!--
 3   Licensed to the Apache Software Foundation (ASF) under one
 4   or more contributor license agreements.  See the NOTICE file
 5   distributed with this work for additional information
 6   regarding copyright ownership.  The ASF licenses this file
 7   to you under the Apache License, Version 2.0 (the
 8   "License"); you may not use this file except in compliance
 9   with the License.  You may obtain a copy of the License at
10 
11        http://www.apache.org/licenses/LICENSE-2.0
12 
13   Unless required by applicable law or agreed to in writing, software
14   distributed under the License is distributed on an "AS IS" BASIS,
15   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   See the License for the specific language governing permissions and
17   limitations under the License.
18 -->
19 <workflow-app xmlns="uri:oozie:workflow:0.5" name="wf-hive-select">
20     <start to="hive-node"/>
21 
22     <action name="hive-node">
23         <hive xmlns="uri:oozie:hive-action:0.5">
24             <job-tracker>${jobTracker}</job-tracker>
25             <name-node>${nameNode}</name-node>
26             <prepare>
27                 <delete path="${nameNode}/${oozieDataRoot}/${outputDir}"/>
28             </prepare>
29             <job-xml>${nameNode}/${oozieAppsRoot}/hive-select/hive-site.xml</job-xml>
30             <configuration>
31                 <property>
32                     <name>mapred.job.queue.name</name>
33                     <value>${queueName}</value>
34                 </property>
35             </configuration>
36             <script>select-student.sql</script>
37             <param>OUTPUT=${nameNode}/${oozieDataRoot}/${outputDir}</param>
38         </hive>
39         <ok to="end"/>
40         <error to="fail"/>
41     </action>
42 
43     <kill name="fail">
44         <message>Hive failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
45     </kill>
46     <end name="end"/>
47 </workflow-app>

6.编辑sql脚本 select-student.sql

--
-- 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.
--
insert overwrite directory '${OUTPUT}' select count(1) from hive_bbs_product_snappy;

7.把配置文件上传至hdfs

1 bin/hdfs dfs -put /opt/cdh-5.3.6/oozie-4.0.0-cdh5.3.6/oozie-apps/hive-select/ /user/root/oozie-apps

8.提交任务

1）启动oozie

1 bin/oozied.sh start

2）提交

1 export OOZIE_URL=http://localhost:11000/oozie

  bin/oozie job -config oozie-apps/hive-select/job.properties -run

测试成功!

转载于:https://www.cnblogs.com/xuyou551/p/8059472.html