工作中用到的hadoop命令集合

--创建hdfs目录
hadoop fs -mkdir /tmp/liushuming

sql("""
select dayno,search_word,count(1) as serch_num
    from dw.f_evt_browser_search_detaily
    where dayno>=20190521 and dayno<=20190527
    group by dayno,search_word
""").write.csv("/tmp/liushuming/query类别分析1531");

hadoop fs -ls hdfs://data-batch-hdfs/tmp/liushuming/query人群分析

--------------------  数据导出
---给目录赋权限
hadoop fs -chmod -R 777 /tmp/liushuming

--从hdfs导出数据
hadoop fs -getmerge hdfs://data-batch-hdfs/tmp/liushuming/query类别分析1531 /home/advert/liushuming/query1531.csv
-- copy 到本地
sz /home/advert/liushuming/query1531.csv

//将本地文件上传到HDFS中，前面为服务器中文件路径，后面为HDFS中文件路径
hadoop fs -put /home/advert/liushuming/data/sample_libsvm_data.txt   hdfs://data-batch-hdfs/tmp/liushuming/   

//将hdfs文件下载到本地
hadoop fs -get hdfs://data-batch-hdfs/user/stat/xiaopengpeng/dirad/meirongzhengxing.txt /home/advert/liushuming/meirongzhengxing

---本地上传到服务器
rz

------ 本地文件上传到hdfs目录
hadoop fs -put /home/advert/liushuming/myStudyScala.jar hdfs://data-batch-hdfs/tmp/liushuming/

---显示文件夹详情
hadoop fs -ls hdfs://data-batch-hdfs/tmp/liushuming/

--- 删除文件
hadoop fs -rm -r -skipTrash hdfs://data-batch-hdfs/tmp/

--创建文件夹
hadoop fs -mkdir hdfs://data-batch-hdfs/tmp/liushuming