Gradle & Springboot introducing low version of ES

Elastic Search was introduced into SpringBoot before, but due to the low server version, the latest version of ES is 6.x.x, and what I need is 5.1.1 (org.elastic search.client: transport: 5.1.1). When I introduced the version package 5.1.1, the dependency of org.elasticsearch:elasticsearch in org.elasticsearch.client:transport:5.1. ...

Posted on Thu, 02 May 2019 19:20:37 -0400 by kumar_ldh

Arthas helps troubleshoot skywalking unavailability on the line

Preface First, describe the background of the problem. The blogger has a habit of looking at the error of skywalking's trace page every day when he goes to and from work. But one day, I suddenly found that the production environment skywalking page had no data, and the page did not show any abnormalities. It was a bit panicky. Although we did n ...

Posted on Wed, 01 May 2019 16:00:37 -0400 by Mad Mick

solr awareness, linux installation, java use (including download resources)

Catalog: I. General Understanding of solr II. solr Installation 3. Deep Understanding of solr IV. Use of solr (1) Because we use Chinese, we need a Chinese analyzer. Here I use IK Analyzer 2012 FF_hf1. (2) Specify the business domain field name in schema.xml at the same time... (3) Configure replication domains in schema.xml at the same time ...

Posted on Mon, 29 Apr 2019 10:40:35 -0400 by acook

Subtle differences in the order in which Maven plug-ins declare

                     The source of this article is: http://blog.csdn.net/bluishglc/article/details/50380880 Forbidden to reproduce in any form, otherwise CSDN will be entrusted to officially safeguard rights and interests! Look at this very interesting question: A project requires a package operation like this: The jar package ...

Posted on Sat, 27 Apr 2019 12:42:35 -0400 by robocop

dubbo Source Parsing Service Reference Process

dubbo service reference process Objective: To analyze the service reference process from the source code perspective. Preface As explained in the previous article on the process of service exposure, there are two ways of service reference. One is direct connection, that is, directly specifying the address of the service for reference. This way ...

Posted on Sat, 27 Apr 2019 07:24:36 -0400 by mdversion1

Maven Learning Summary 4--POM

Maven--pom what is the POM? A basic pom file List of elements in a pom file Super POM POM relationship inherit polymerization what is the POM? Pom is the abbreviation of English project object model, translated into project object model. When we learn programming language, we often come into contact with the concept ...

Posted on Sat, 27 Apr 2019 00:00:35 -0400 by sonofyoda

Join operation of two files using MapReduce

Article Directory data structure customer order MapJoin describe Main function entry Construct class code results of enforcement MapJoin Pit Record ReduceJoin describe Main function entry Construct class code Result ReduceJoin Pit Record data structure customer USER_ID NAME PHONE 1 Big Tree 13111111111 2 L ...

Posted on Fri, 26 Apr 2019 14:24:36 -0400 by adamsca

Spark ML Pipelines (ML Pipelines)

Statement: The code is mainly Scala, and we hope that readers will pay attention to it. This blog is code-based, there will be detailed comments in the code. Related articles will be published in my personal blog column Spark 2.0 Machine Learning Welcome your attention. I. Main concepts of Pipelines ML can be applied to a va ...

Posted on Thu, 25 Apr 2019 19:54:39 -0400 by danleighton

zookeeper Quick Start

zookeeper What is zookeeper Apache ZooKeeper is a software project of the Apache Software Foundation. It provides open source distributed configuration services, synchronization services and naming registration for large distributed computing. ZooKeeper used to be a sub-project of Hadoop, but now it's a top-level independent project. ZooKeeper' ...

Posted on Thu, 25 Apr 2019 17:00:34 -0400 by dusty

Flink Introduction and Deployment

First, First Understanding Flink Official website: https://flink.apache.org/ Apache Flink is a distributed, high performance, high availability and high precision open source stream processing framework for data stream applications. It was accepted by Apache Incubator in 2014 and quickly became one of the top projects of ASF (Apache Software ...

Posted on Thu, 25 Apr 2019 16:57:35 -0400 by include_me