-
升级
我们建议在升级之前备份数据库和配置文件。通常情况下，我们保证升级不会影响现有数据。 备份数据意味着即使升级失败或者你不想使用高级版本，你也有回滚的选择。 Docker Compose 如果你使用 Docker Compose 安装 Answer，升级非常简单。 docker - compose pull docker - compose ... -
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... -
MySQL/MariaDB Prerequisite
You must change the variable log_bin_trust_function_creators to 1 during Ranger installation. From RDS Dashboard>Parameter group (on the left side of the page): Set the MySQL... -
Structured Streaming
Spark Structured Streaming Iceberg uses Apache Spark’s DataSourceV2 API for data source and catalog implementations. Spark DSv2 is an evolving API with different levels of support... -
Debugging Kyuubi
Debugging Server Debugging Engine Flink Engine Trino Engine Hive Engine Debugging Apps Spark Engine Flink Engine You can use the Java Debug Wire Protocol to debug Kyuubi ... -
jdoquery DTD/XSD
JDO defines XML MetaData in jdo files as well as orm files, but also specifies that named queries can be defined in jdoquery files. As always with XML, the metadata must match t... -
Installing MySQL
About This Task Before You Begin Steps About This Task You can install MySQL 5.5 or later. Before You Begin On the Ambari host, install the JDBC driver for MySQL, and then... -
Flink Queries
Flink Queries Iceberg support streaming and batch read With Apache Flink ‘s DataStream API and Table API. Reading with SQL Iceberg support both streaming and batch read in Flink... -
JVM 监控
进程级监控 埋点方式 本讲介绍JVM监控相关知识。 进程级监控 Java类的程序，如果只是监控端口存活性，可以直接使用 Categraf 的 net_response 插件，如果只是监控进程存活性，以及进程的CPU、内存等使用率，这个和C的程序、Go的程序没有本质区别，使用 Categraf 的 procstat 插件。 procstat 插... -
String
match split trim replace toLower toUpper test toString match RegExp → String → [String | Undefined] Parameters rxA regular expression. strThe string to match against...
