Header and trailer metadata transmission The header and trailer metadata will finally be set to the http header. Used to transmit additional information besides proto definitions. For example, user identity authentication information, proxy information, access token, etc. Collectively called metadata.MD in grpc Metadata construction Metadata data structure // MD is a mapping from metadata keys […]
Tag: metadata
Mapillary Street View image metadata crawling
Tip: After the article is written, the table of contents can be automatically generated. For how to generate it, please refer to the help document on the right. Article directory Preface 1. Create a Mapillary account and register the application 1. Create an account 2.Register application 2. Use Mapillary API to access image metadata 1. […]
Android development to obtain information in the video (such as preview or video duration) MediaMetadataRetriever media metadata retriever…
Foreword Obtaining video information in Android mainly relies on MediaMetadataRetriever Get video preview /** * Get video thumbnail * @param vedioFile * @return */ fun getVideoThumbnail(vedioFile: File): Bitmap? { if (!vedioFile.exists()) { Log.e(“zh”, “Video file does not exist”) return null } val retriever = MediaMetadataRetriever() retriever.setDataSource(vedioFile.getAbsolutePath()) return retriever.frameAtTime } /** * Get the video thumbnail […]
A method for Hudi on Flink to dynamically synchronize metadata changes
1. Background A requirement is to synchronize MySQL data to Hive, including DDL and DML, so metadata changes need to be dynamically synchronized. 2. Official Schema Evolution example From the Hudi official document Schema Evolution (https://hudi.apache.org/docs/next/schema_evolution), we know that DDL operations such as adding columns from the source side and converting int to long column […]
Internationalization and cross-language support for metadata
Table of contents “Internationalization and cross-language support for metadata” technical blog article “Metadata internationalization and cross-language support” technical blog article introduction 1.1. Background introduction With the explosive growth of information on the Internet, the scale and complexity of data continue to increase. In order to better organize and manage this data, people need to describe […]
Revealing the large-scale metadata management mechanism of distributed file systems: taking the Alluxio file system as an example
Authors of this article: Gu Rong, Liu Jiacheng, Mao Baolong Today, our world has entered a data era. With the rapid development of information technologies such as the Internet, IoT, 5G, big data, artificial intelligence, autonomous driving, and the metaverse, the total amount of data that people generate, collect, store, manage, and analyze is growing […]
The Emerging Power of Distributed File Systems: Revealing Alluxio’s Metadata Management Mechanism [Book at the end of the article]
Article directory write in front 01 Common types of distributed file system metadata 1.1 File (inode) metadata 1.2 Data block metadata 1.3 Worker metadata 02 Storage model of distributed file system metadata 2.1 Metadata is stored on the heap (HEAP mode) 2.2 Metadata is stored outside the heap (ROCKS mode) 2.3 Memory and disk usage […]
[Book Giving Event] Revealing the Large-Scale Metadata Management Mechanism of Distributed File Systems – Taking the Alluxio File System as an Example
Foreword “Author’s Homepage”: Sprite has white bubbles “Personal website”: Sprite’s personal website “Recommended Column”: java one-stop service React from entry to master Front-end cool code sharing From 0 to hero, Vue’s road to becoming a god uniapp-from build to promotion From 0 to hero, Vue’s road to becoming a god Solving algorithm, one column is […]
Revealing the large-scale metadata management mechanism of distributed file systems – taking the Alluxio file system as an example
About the author: Ci Qiqi, currently a college student, is learning C/C++, Java, Python, etc. Author homepage: Qiqi’s personal homepage Article collection column: Qiqi’s chat Everyone is welcome to like Collect ? Follow! Revealing the large-scale metadata management mechanism of distributed file systems 1. Common types of distributed file system metadata 1.1 File (inode) metadata […]
Revealing the large-scale metadata management mechanism of distributed file systems – taking the Alluxio file system as an example
Author homepage: Designer Xiao Zheng About the author: 3 years of JAVA full-stack development experience, focusing on JAVA technology, system customization, remote guidance, committed to enterprise digital transformation, CSDN blog expert, Blue Bridge Cloud Course certified instructor. Directory I. Introduction 2. What is a distributed file system? 3. Common types of distributed file system metadata […]