oozie案例——自定义MapReduce workflow
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oozie案例——自定义MapReduce workflow
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相關(guān)運行命令
運行一個應(yīng)用: bin/oozie job -oozie http://hadoop-1:11000/oozie -config examples/apps/map-reduce/job.properties -run 殺掉一個job bin/oozie job -oozie http://hadoop-1:11000/oozie -kill 0000001-160702224410648-oozie-beif-W 查看job的日志信息 bin/oozie job -oozie http://hadoop-1:11000/oozie -log 0000001-160702224410648-oozie-beif-W 查看job的信息 bin/oozie job -oozie http://hadoop-1:11000/oozie -info 0000001-160702224410648-oozie-beif-W?
1.定義job.properties
nameNode=hdfs://hadoop-1:9000 jobTracker=hadoop-1:8032 queueName=default examplesRoot=mr-wordcountoozie.wf.application.path=${nameNode}/user/${user.name}/${examplesRoot}/workflow.xml outputDir=output-data?
2. 定義workflow.xml
<workflow-app xmlns="uri:oozie:workflow:0.2" name="map-reduce-wf"><start to="mr-node"/><action name="mr-node"><map-reduce><job-tracker>${jobTracker}</job-tracker><name-node>${nameNode}</name-node><prepare><delete path="${nameNode}/user/${wf:user()}/${examplesRoot}/${outputDir}"/></prepare><configuration><property><name>mapred.job.queue.name</name><value>${queueName}</value></property><!-- new api flag --><property><name>mapred.mapper.new-api</name><value>true</value></property><property><name>mapred.reducer.new-api</name><value>true</value></property><!-- map task --><property><name>mapreduce.job.map.class</name><value>org.gh.hadoop.mapreduce.WordCount$WCMapper</value></property><property><name>mapreduce.map.output.key.class</name><value>org.apache.hadoop.io.Text</value></property><property><name>mapreduce.map.output.value.class</name><value>org.apache.hadoop.io.IntWritable</value></property><!-- reduce task --><property><name>mapreduce.job.reduce.class</name><value>org.gh.hadoop.mapreduce.WordCount$WCReducer</value></property><property><name>mapreduce.job.output.key.class</name><value>org.apache.hadoop.io.Text</value></property><property><name>mapreduce.job.output.value.class</name><value>org.apache.hadoop.io.IntWritable</value></property><property><name>mapred.map.tasks</name><value>1</value></property><!-- input data dir --><property><name>mapred.input.dir</name><value>/user/${wf:user()}/${examplesRoot}/input-data</value></property><!-- output data dir --><property><name>mapred.output.dir</name><value>/user/${wf:user()}/${examplesRoot}/${outputDir}</value></property></configuration></map-reduce><ok to="end"/><error to="fail"/></action><kill name="fail"><message>Map/Reduce failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message></kill><end name="end"/> </workflow-app>?
轉(zhuǎn)載于:https://www.cnblogs.com/guanhao/p/5649937.html
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