"Customer_Driver");job.setJarByClass(Custom_Driver.class);//设置输入job.setInputFormatClass(TextInputFormat.class);TextInputFormat.addInputPath(job,newPath("E:\\2019大数据课程\\DeBug\\测试\\ordercomment.csv"));job.setMapperClass(Custom_Mapper.class);job.setMapOutputKey...
1. 3、导出成csv格式 添加一行表头,替换分列符 #第一列添加表头 sed '1i Employee, EmpId' app_register.csv 1. 2. #将 | 替换 成 , (逗号等是csv格式的分隔符) sed -i 's/|/,/g' app_register.csv 1. 2.
"Customer_Driver");job.setJarByClass(Custom_Driver.class);//设置输入job.setInputFormatClass(TextInputFormat.class);TextInputFormat.addInputPath(job,newPath("E:\\2019大数据课程\\DeBug\\测试\\ordercomment.csv"));job.setMapperClass(Custom_Mapper.class);job.setMapOutputKeyClass...
Assign a variable to each row in a CSV file I have a CSV file which contains this: I need to append another number on to each line when the same person gets another score. The only way I can think of is assigning each of these rows a different ......
自定义OutputFormat案例实操 1.需求 过滤输入的log日志,包含atguigu的网站输出到e:/atguigu.log,不包含atguigu的网站输出到e:/other.log。 (1)输入数据 (2)期望输出数据 2.需求分析 3.案例实操 (1)编写FilterMapper类 package com.atguigu.mapred...
2、自定义outputformat,改写其中的recordwriter,改写具体输出数据的方法write() 接下来我们开始上手代码! 第一步:自定义一个outputformat publicclassCustom_OutputFormatextendsFileOutputFormat<Text,NullWritable>{ @Override publicRecordWriter<Text,NullWritable>getRecordWriter(TaskAttemptContextcontext)throwsIOException,Interrupt...
TextInputFormat.setInputPaths(job,newPath("file:///Volumes/赵壮备份/大数据离线课程资料/5.大数据离线第五天/自定义outputformat/input/ordercomment.csv"));//自定义map逻辑job.setMapperClass(MyOutputMapper.class);//设置k2,v2输出类型job.setMapOutputKeyClass(Text.class); job...
2、rdd.saveAsHadoopFile("file:///E:/dataFile/result",classOf[T],classOf[T],classOf[outputFormat.class]) 3、df.write.format("csv").save("file:///E:/dataFile/result") 以上都简单的,最普遍的保存文件的方式,有时候是不能够满足我们的需求,上述的文件保存方式中,保存之后,文件名通常是part-00000...
(1）自定义一个类继承FileoutputFormat。 (2）改写RecordWriter，具体改写输出数据的方法write()
assertEquals(2, dom.getElementsByTagName("Placemark").getLength()); } 代码示例来源:origin: org.geoserver.extension/gs-ogr-wfs @Test public void testSimpleCSV() throws Exception { // prepare input FeatureCollection fc = dataStore.getFeatureSource("Buildings").getFeatures(); fct.getFeature().add...