Tag：big data
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Introduction to Spark
1、Introduction to Spark 2、Spark-Core Core Arithmetic 3、Spark-Core 4、SparkSQL Article Catalog I. IntroductionII. Installation1. Introduction2、Local deployment (Local mode)2.1 Installation2.2 Official WordCount example 3. Standlong mode3.1 Introduction2.2 Installing the cluster2.3 Official Test Cases 4. Yarn model3.1 Installation3.2 Configuring the History Server3.3 Configuring to View Historical Logs 5. Mesos mode6. Comparison of several models7. Common ports Third, Yarn […]
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ES operation and maintenance common commands, common troubleshooting commands, es cluster health, cluster node allocation information, slice allocation information, slice unallocated problem diagnosis, cluster open password access
catalogs Querying the health of a cluster View allocation information for all nodes in the cluster Total document count for query clusters/indexes Querying the cluster’s slice allocation information Query the number of indexes in the cluster, the number of documents, or which indexes are included in the cluster Querying the cluster’s snapshot storage information Viewing […]
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Elasticsearch Data Search Principles
Elasticsearch is an open source, Lucene-based distributed search and analytics engine designed for use in cloud computing environments that enables real-time, scalable search, analysis, and exploration of full-text and structured data. It is highly scalable and can search and analyze large amounts of data in a short period of time. More than just a full-text […]
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Big Data Knowledge Graph – Knowledge Graph + flask based Big Data (KBQA) NLP Medical Knowledge Quiz System
Big Data Knowledge Graph – Knowledge Graph + flask based big data NLP medical knowledge Q&A system (the most detailed explanation and source code on the net / recommended collection) I. Project overview Second, the basic process of medical knowledge Q&A system that realizes knowledge graphs III. Version numbers used for project tools IV. Installation […]
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Common Uses of the Version Control Tool Git
Git is a very powerful and flexible version control tool that provides many commands and features to manage code versioning, branching, merging, and more. Here are some detailed uses of Git: Configure related commands: Set up a username and email address:git config –global user.name “Your Name” git config –global user.email “[email protected]” Basic Operations: Initialize a […]
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kafka selection comparison and application scenarios
Article Series Catalog Getting Started first pass, hand to teach you to install kafka and visualization tools kafka-eagle What is Kafka and how to use SpringBoot to interface with Kafka Architecture Essential Capabilities – kafka Selection Comparison and Application Scenarios Article Series CatalogI. Kafka’s model and advantages1. Kafka model2. Kafka advantages Second, the difference between […]
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Elasticsearch family of components: Kibana’s seamlessly integrated data visualization and exploration platform
Elasticsearch is an open source, Lucene-based distributed search and analytics engine designed for use in cloud computing environments that enables real-time, scalable search, analysis, and exploration of full-text and structured data. It is highly scalable and can search and analyze large amounts of data in a short period of time. More than just a full-text […]
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How to realize web search auto-complete function
Article Catalog pinyin splitter (Chinese romanization system) Customized Splitters completion suggester Book Recommendation pinyin splitter (Chinese romanization system) When we enter pinyin and keywords in many websites, the auto-completion function will appear to help users search for the results they want. Elasticsearch can help us accomplish this. If you want to use pinyin to search […]
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postgresql kernel source code analysis btree indexes add, delete and check the code basic principles of flow analysis, the reason for the index expansion is here!
B-Tree index code flow analysis Column content： postgresql kernel source code analysisHandwritten database toadbconcurrent programming open source contribution： toadb open source library Personal homepage：My Home Page Managing the community：Open source databases Motto: “The sky is healthy, the gentleman is self-improvement; the earth is Kun, the gentleman is virtuous. summarize The most commonly used index in […]