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I. deploy zookeeper 1. Resource planning The server bigdata121/192.168.50.121，bigdata122/192.168.50.122，bigdata123/192.168.50.123 zookeeper version 3.4.10 System version centos7.2 2. Cluster deployment (1) install zk [root@bigdata121 modules]# cd /opt/modules/zookeeper-3.4.10 [root@bigdata121 zookeeper-3.4.10]# mkdir zkData [root@b ...

The code to get Url is as follows: window.location.href; Method 1: native js (assuming the Url address has been obtained) var url = 'https://gitbook.cn/gitchat/geekbooks?tag=JavaScript&name=pwwu&age=24'; var temp1 = url.split('?'); var pram = temp1[1]; var keyValue = pram.split('&'); ...

The previous article wrote about how to build a reusable image of tomcat. This article talked about how to use this image to build different projects repeatedly. Go straight to the subject: Step 1 create the corresponding mavn project job Other configurations remain the same. The main change is the action after the build project. Note: becaus ...

Wrapper class and String class Packaging class Object Class is the parent of all classes 8 Basic data types jdk5 Before: Object o = 12;//Not before jdk5 jdk5 The wrapper class then converts the base data type to the reference data type Classification of packaging Basic data type Packaging ty ...

This paper introduces GuassDB's Cross cluster access to remote oracle and remote MPPDB database. Due to the limited environment, docking HDFS and docking Spark functions are not listed here. I. docking with oracle Database 1. Restriction Only connection from Oracle11.2.0.1 to Oracle12.2.0.1 is supported. The Oracle-ODBC driver version is requ ...

Error 1 when hive starts Cannot execute statement:impossible to write to binary long since BINLOG_FORMAT = STATEMENT... //Error when starting Caused by: javax.jdo.JDOException:Couldnt obtain a new sequence(unique id):Cannot execute statement:impossible to write to binary log since BINLOG_FORMAT = STATEMENT and at least one table uses a storage ...

Preface In Learn Flink from 0 to 1: introduction to Data Source In this article, I will introduce Flink Data Source and user-defined Data Source briefly. In this article, I will introduce it in more detail and write a demo for you to understand. Flink Kafka source Preparation Let's take a look at the demo for Flink to get data from Kafka ...

DNFS is a new feature introduced by Oracle 11g to improve the IO performance of the system with NFS. Compared with system level NFS, DNFS reduces the consumption of network and IO transmission. The reasons for the low IO capacity of normal NFS are:1. Low efficiency data transmission, multi link implementation is difficult;2. The system's RPC s ...

Article directory A brief introduction of big data types in C language High precision addition High precision multiplication A brief introduction of big data types in C language As we know, there is a limit in the scope of using data types such as int or double to store data directly inside the ...

I. Preface In fact, the best name of observer mode should be "publish and subscribe" mode, which is similar to the publish and subscribe mode in our big data, but there are also differences. In the previous design mode, we learned the arbiter mode, in which when the state of the control changes, we will send a message to the arbiter ...