Java  Java  Java  JavaSpringMyBatis Hadoop 

>  JSPStruts2

Java



1. ****  Java 
2. **** 
3. ****  Java

Java Java 



**SHEIN**

>  SHEINSHEIN 

![SHEIN Big Data](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11/shein-bigdata.jpg)

SHEIN **JavaJVM** 



**Alibaba**

![Alibaba Big Data](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11/alibaba-bigdata.jpg)



> HadoopHiveHbase

nonono!

 HDFSHBaseHadoop  Elasticsearch

**:**

1. ****
2. **JavaJVM**
3. ** Linux  shell  Python**
4. HadoopMapReduceHDFSHive,HQL
5. ** Spark  Spark Streaming**
6.  ElasticsearchKafka
7. ......

 **Java  Java jvm **  Java 

 Spark 

1. Spark 
2. Spark 
3. Spark 
4. ......

 Spring  web , web