Programmer Think

1 environment Next, take the HDP Version (HDP-3.1.5.0-centos7-rpm.tar.gz) as an example to introduce the installation and configuration of hive 3 in detail. The environment can be CentOS 7 or CentOS 8 (although the tar package is CentOS 7, the build RPM used in this paper is still applicable to CentOS 8). Before installation, manually ...

demand Suppose a company provides you with the following data. The modified data includes three. txt document data, namely date data, order header data and order details data. Let you conduct the following demand analysis according to the data provided by the company. 1. Calculate the annual sales orders and total sales in all orders. 2. ...

1, Deployment planning hadoop high availability cluster deployment reference: Hadoop 3. X distributed high availability cluster deployment 1.1 version description Softwareeditionoperating systemCentOS Linux release 7.8.2003 (Core)JAVAjdk-8u271-linux-x64Hadoophadoop-3.2.2Hivehive-3.1.2 1.2 cluster planning hive remote mode & & hivese ...

How to connect hbase stand-alone version (using external zk) and java api 0 create modify information timecontentremarks20210927create documents 0 version Component nameeditionDownload addressoperating systemcentos7CentOS-7-x86_64-DVD-2009.isojdk1.8jdk-8u301-linux-x64.tar.gzhadoop3.0.0hadoop-3.0.0.tar.gzzookeeper3.4.5zookeeper-3.4.5.tar.gzhb ...

Software is becoming more and more complex, which has become a trend. The traditional process oriented method can not meet the needs of software development. In order to better maintain the software, people begin to consider corresponding the real-world entities with the modules in the software. The modules in the software not only have the ...

Job requirements: 1. Browse electronic courseware and notes. (Browse without submitting) 2. Complete textbook examples 2.6, 2.8, 2.10, 2.11, 2.13. 3. Complete the textbook P280 experiment 1, experiment 2. 4. Complete the contents of the following experiment topics. 5. Complete the third exercise on page P23 of the textbook and convert it into a ...

The third example uses the logical regression of Spark ML to predict music tags This is a multivariate classification problem, that is, there are many predicted results.For the introduction and knowledge points of Spark ML, please refer to: Spark ML learning notes - Spark MLlib and Spark ML. 3.1 data preparation 3.1.1 data set file ...

1, Introduction The latest version 0.9 of hudi came out in September after many calls. hudi can store massive data on the basis of hadoop. It can not only batch process, but also stream process on the data lake, that is, the combination of offline and real-time. It also provides two native semantics: 1) Update/Delete records: that is, rec ...

HDFS troubleshooting 1. NameNode fault handling Requirements: The NameNode process hangs and the stored data is lost. How to recover the NameNode fault simulation kill -9 NameNode processDelete data stored in NameNode:[codecat@hadoop102 dfs]$ rm -rf /opt/module/hadoop-3.1.3/data/dfs/name/* Solution Copy the data in the SecondaryNa ...

1 Preface 1.1 data set source The data in this case comes from the real data of Toronto in 2018-2019 on Airbnb website.The data set contains the listing data set, with about 20000 pieces of data, recording all the house information, including dozens of information fields including price.Another data set in the data set is calendar, which ...