I am based on official documents. http: hbase.apache.org book. first step: download hbase http: mirrors.shu.edu.cn apa. step 2: change JAVA_HOME and configuration as per the document. step 3: run . bin hbase shell this step is actually a ...
RT. Because of the nature of hbase, a rowkey can be copied many times and can store multiple versions of data. At this stage, how to parse through the national node.js to get the data of the previous version? ...
<button id="btn">< button> <div id="iframeDecl"> <iframe src="" name="iframeHtml" id="iframeHtml">< iframe> < div> js: $(function(){ $("-sh...
recently I saw a piece of source code in flask, and I saw that in a class definition, some attributes were written in the form of property decorator, while others were instantiated in property. What s the use of this? I really don t understand why? ...
copied items on the official website side navigation , it is OK not to set the width of el-aside , but there is a problem after < el-aside width= " 200px "> . <el-container> <el-aside width="200px"> <...
recently encountered a data conversion problem, as follows: for example, metadata is like this: [{ name: a , children: [{ name: b , children: [{ name: c },{ name: d , }] }] }, { name: f , children:...
how to prevent you from going back to the login page by clicking the browser back button after logging in? ...