NIFI大数据进阶_离线同步MySql数据到HDFS_说明操作步骤---大数据之Nifi工作笔记0028
本文共 352 字，大约阅读时间需要 1 分钟。
然后我们看如何把mysql中的数据,实时的同步到hdfs中去
准备工作首先,创建一个mysql表,然后启动hadoop集群
处理器我们需要这些处理器,首先通过querydatabasetable处理器,查询mysql中的数据,然后,把mysql中的数据,导入到
convertavrotojson处理器,注意querydatabasetable处理器,导出来的数据是avro格式的数据,然后再用
convertavrotojson把avro格式转换成json格式,然后再用splitjson,切割json数据,提取json中的数据,到splitjson的自定义属性中,然后再
用puthdfs处理器,提取splitjson切割好的,提取好的数据,拼接到puthdfs的命令中,就可以提交数据到hdfs中了
转载地址：http://zdjfk.baihongyu.com/
你可能感兴趣的文章
NN&DL4.1 Deep L-layer neural network简介
查看>>
NN&DL4.3 Getting your matrix dimensions right
查看>>
NN&DL4.7 Parameters vs Hyperparameters
查看>>
NN&DL4.8 What does this have to do with the brain?
查看>>
nnU-Net 终极指南
查看>>
No 'Access-Control-Allow-Origin' header is present on the requested resource.
查看>>
No 'Access-Control-Allow-Origin' header is present on the requested resource.
查看>>
NO 157 去掉禅道访问地址中的zentao
查看>>
no available service ‘default‘ found, please make sure registry config corre seata
查看>>
No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
查看>>
no connection could be made because the target machine actively refused it.问题解决
查看>>
No Datastore Session bound to thread, and configuration does not allow creation of non-transactional
查看>>
No fallbackFactory instance of type class com.ruoyi---SpringCloud Alibaba_若依微服务框架改造---工作笔记005
查看>>
No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalanc
查看>>
No mapping found for HTTP request with URI [/...] in DispatcherServlet with name ...的解决方法
查看>>