凤凰通过上传bulk csv文件命令不明白？

Question

我想使用phonix上传批量csv文件，但我无法理解下面的命令。你能详细解释我吗？

HADOOP_CLASSPATH=$(hbase mapredcp):/path/to/hbase/conf hadoop jar phoenix-<version>-client.jar org.apache.phoenix.mapreduce.CsvBulkLoadTool --table EXAMPLE --input /data/example.csv 

我从以下网站下载此命令。 https://phoenix.apache.org/bulk_dataload.html

Answer 1

我不确定你是否还在寻找答案。但在这里。首先设置HADOOP_CLASSPATH，然后使用jar选项调用可执行文件“hadoop”以查找phoenix客户机jar以及要使用参数运行的类。
以下内容可以帮助您了解hadoop命令的用法（尝试在您的ssh shell中输入hadoop）

Usage: hadoop [--config confdir] [COMMAND | CLASSNAME] 
    CLASSNAME   run the class named CLASSNAME 
or 
    where COMMAND is one of: 
    fs     run a generic filesystem user client 
    version    print the version 
    jar <jar>   run a jar file 
         note: please use "yarn jar" to launch 
          YARN applications, not this command. 
    checknative [-a|-h] check native hadoop and compression libraries availability 
    distcp <srcurl> <desturl> copy file or directories recursively 
    envvars    display computed Hadoop environment variables 
    archive -archiveName NAME -p <parent path> <src>* <dest> create a hadoop archive 
    classpath   prints the class path needed to get the 
    credential   interact with credential providers 
         Hadoop jar and the required libraries 
    daemonlog   get/set the log level for each daemon 
    trace    view and modify Hadoop tracing settings 

Most commands print help when invoked w/o parameters.