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为 HDF 服务安装数据库
安装和配置MySQL 安装和配置 Postgres 使用 Oracle 数据库 安装 Schema Registry、SAM、Druid 和 Superset 时，您需要一个关系数据存储来存储元数据。您可以使用 MySQL、Postgres、Oracle 或 MariaDB。这些主题描述如何安装 MySQL、Postgres 和 Oracle 以及如... -
Retention
Introduction Design Overview of Gobblin Config Management Library Retention Constructs DatasetCleaner DatasetFinder ManagedCleanableDatasetFinder ConfigurableCleanableDataset ... -
第六章：volatile关键字
学习目标 1 内存可见性问题 1.1 什么是内存可见性 1.2 内存可见性问题的原因 2 volatile的作用与使用场景 2.1 volatile关键字介绍 2.2 volatile的内存语义 2.3 volatile的适用场景 2.4 volatile不能解决的问题 3 volatile与synchronized的区别 3.1 可见性与... -
Hadoop Credentials Manager
Configurations Cluster Services Hadoop client configurations Hive metastore configurations Via kyuubi-defaults.conf Via hive-site.xml Via JDBC Connection URL Credentials Rene... -
EventMesh Runtime Quick Start
EventMesh Runtime Quick Start 1. Binary Distribution Deployment 1.1 Environment 1.2 Download 1.3 Configuration 1.3.1 EventMesh Runtime Configuration 1.3.2 Event Store Configurat... -
Writes
Spark Writes To use Iceberg in Spark, first configure Spark catalogs . Some plans are only available when using Iceberg SQL extensions in Spark 3. Iceberg uses Apache Spark’s D... -
Trino
Trino just like Presto allows you to query table formats like Hudi, Delta and Iceberg tables using connectors. Users do not need additional configurations to work with OneTable syn... -
Stored Procedure
存储过程节点 任务参数 存储过程节点 根据选择的数据源，执行存储过程。 拖动工具栏中的PROCEDURE 任务节点到画板中，如下图所示： 前提：在该数据库里面创建存储过程，如： CREATE PROCEDURE dolphinscheduler . test ( in in1 INT , out out1 I... -
Distributed objects
Object holder Java implementation of Redis or Valkey based RBucket object is a holder for any type of object. Size is limited to 512Mb. Code example: RBucket < AnyObject > buc... -
11. Redis commands mapping
Redis command Sync / Async APIRedisson.create(config) Reactive APIredisson.reactive() RxJava3 APIredisson.rxJava() AUTH Config.setPassword() - - APPEND RBinarySt...
