如何以 csv 格式输出 hadoop 结果
我需要以 .csv 格式输出我的 hadoop 结果.我将如何做到这一点?我的代码:https://github.com/studhadoop/xml/blob/master/XmlParser11.java
I need to output my hadoop result in .csv format. how will i do this? My code :https://github.com/studhadoop/xml/blob/master/XmlParser11.java
我是否应该在我的代码中简单地包含 csvoutputFormat.我正在使用 mapreduce API
should i simply include csvoutputFormat in my code. I am using mapreduce API
我的工作.sh
bin/hadoop jar /var/root/ALA/ala_jar/clsperformance.jar ala.clsperf.ClsPerf /user/root/ala_xmlrpt/Amrita Vidyalayam, Karwar_Class 1 B_ENG.xml /user/root/ala_xmlrpt-outputshell4
bin/hadoop fs -get /user/root/ala_xmlrpt-outputshell4/part-r-00000 /Users/jobsubmit
cat /Users/jobsubmit/part-r-00000 /Users/jobsubmit/output.csv
解决方案
是我失踪了>在猫
cat /Users/jobsubmit/part-r-00000> /Users/jobsubmit/output.csv
推荐答案
可以使用TextOutputFormat.默认的键/值分隔符是制表符.您可以通过在驱动程序中设置属性mapred.textoutputformat.separatorText"来更改分隔符.
You can use TextOutputFormat. The default key/ value separator is a tab character. You can change the separator by setting the property "mapred.textoutputformat.separatorText" in your driver.
conf.set("mapred.textoutputformat.separatorText", ",");
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