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环境准备
要使用 Ambari 部署 Hortonworks stack，您需要准备部署环境： 设置无密码 SSH 设置服务用户帐户 在集群和浏览器主机上启用 NTP 检查 DNS 和 NSCD 配置 iptables 禁用 SELinux 和 PackageKit 并检查 umask 值 下载并设置数据库连接器 为 Ranger 配置数据库实例 ... -
Gobblin on Yarn
Introduction Architecture Overview The Role of Apache Helix Gobblin Yarn Application Launcher YarnAppSecurityManager LogCopier Gobblin ApplicationMaster YarnService GobblinH... -
Batch Reads
Spark DataSource API Daft Spark DataSource API The hudi-spark module offers the DataSource API to read a Hudi table into a Spark DataFrame. A time-travel query example: val ... -
Exceptions
JDOException Can Retry Exceptions Fatal Exceptions All exceptions raised by a JDO implementation are runtime exceptions which means that you can choose to catch the exceptions ... -
Client Properties (3.x)
Below are properties set in accumulo-client.properties that configure Accumulo clients . All properties have been part of the API since 2.0.0 (unless otherwise specified): Pr... -
Hive
Hive Iceberg supports reading and writing Iceberg tables through Hive by using a StorageHandler . Feature support The following features matrix illustrates the support for diff... -
Socket
Support Those Engines Key features Description Data Type Mapping Options How to Create a Socket Data Synchronization Jobs Socket source connector Support Those Engines ... -
Collections
_.at(collection, [index]) Arguments Returns Example _.contains(collection, target, [fromIndex=0]) Aliases Arguments Returns Example _.countBy(collection, [callback=identit... -
GitHub 趋势日报 (2025年04月07日)
GitHub 趋势日报 (2025年04月07日) 📈 今日整体趋势 Top 10 📊 分语言趋势 Top 5 TypeScript C++ C Rust Java Vim Script C MDX Lua Kotlin GitHub 趋势日报 (2025年04月07日) 本日报由 TrendForge 系统生成 https:... -
PL/pgSQL Functions
Dynamic Cypher Cypher commands can be run in PL/pgSQL functions without restriction. Data Setup SELECT * FROM cypher ( 'imdb' , $$ CREATE ( toby : actor { name : ...
