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序列化
序列化实现实例序列化,可以方便存储各种类型对象; 常见的序列化格式:BinaryFormater SoapFormater XMLSearializer BinaryFormater System.Runtime.Seriazlization.Formatters.Binary 保真度(100%) ...
分类:其他好文   时间:2020-06-25 14:09:46    阅读次数:54
mybatis 多数据源
1.配置多数据源 spring: # mybatis 连接多数据源配置 db1-mybatis: datasource: jdbcurl: jdbc:mysql://127.0.0.1:3306/cloud-main1?useUnicode=true&characterEncoding=utf8&u ...
分类:其他好文   时间:2020-06-24 17:47:30    阅读次数:46
How to optimize large state Flink job?
For Flink applications to run reliably at large scale, two conditions must be fulfilled: The application needs to be able to take checkpoints reliably ...
分类:其他好文   时间:2020-06-24 14:07:13    阅读次数:47
SQL Server Merge数据
--导数据 MergeMERGE os_staff AS t USING (select ear_code,sta_code,sta_pwd,sta_name,sta_dpt_code,job_code,sta_join_date,sta_sex,sta_status from ITSV123.hi ...
分类:数据库   时间:2020-06-24 13:54:50    阅读次数:69
基本概念
基本概念: 实体:java中的类 记录:Java的对象 字段:java的属性,列 表:同一个实体中,所有的记录字段组合起来就是一张表select *from 表名;select empno ,ename,job from emp ; select empno as "编号", ename "姓名", ...
分类:其他好文   时间:2020-06-24 11:49:12    阅读次数:39
GitLab CI/CD Pipeline Configuration Reference:三 [Parameter details: script before_script and after_script stage]
script script is the only required keyword that a job needs. It's a shell script which is executed by the Runner. For example: job: script: "bundle ex ...
分类:其他好文   时间:2020-06-23 18:56:37    阅读次数:111
oracle impdp 出错 ORA-31655: no data or metadata objects selected for job ORA-39154:
出现问题: impdp 导入时报错sql: impdp xxx/xxx@127.0.0.170/orcl directory=DPDATA dumpfile=20200623data.DMP full=y ; Connected to: Oracle Database 12c Enterprise ...
分类:数据库   时间:2020-06-23 15:31:17    阅读次数:75
CentOS7 网络服务启动失败
错误:job for network.service failed because the control process exited with error code.see "" fordetails failed to start lsb bring up/down networking 解决 ...
分类:其他好文   时间:2020-06-22 18:54:09    阅读次数:112
promethus监控node
1、下载node_exporter https://github.com/prometheus/node_exporter/releases 2、启动node_exporter nohup ./node_exporter & > nohup.out & 3、prometheus 配置 - job_n ...
分类:其他好文   时间:2020-06-21 23:28:21    阅读次数:46
Hadoop【MR的分区、排序、分组】
一.分区 问题:按照条件将结果输出到不同文件中 自定义分区步骤 1.自定义继承Partitioner类,重写getPartition()方法 2.在job驱动Driver中设置自定义的Partitioner 3.在Driver中根据分区数设置reducetask数 分区数和reducetask关系 ...
分类:编程语言   时间:2020-06-21 11:32:34    阅读次数:65
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