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  • 变量管理

    背景介绍 创建变量 在Flink SQL中引用变量 在Flink JAR作业的args中引用变量 背景介绍 在实际生产环境中,Flink作业一般很复杂,会依赖多个外部组件,例如,从Kafka中消费数据时要从HBase或Redis中去获取相关数据,然后将关联好的数据写入到外部组件,这样的情况下会导致如下问题: Flink作业想要关联这些组件,需...
  • Yarn 队列管理

    背景介绍 如何创建Yarn队列 如何使用可用队列 该功能的相关条目 背景介绍 在实际的生产环境中,针对 Yarn 部署模式 , 用户通常需要输入 queue 或 queue &labels 来指定 yarn-application 模式下的 Flink 应用程序 或 yarn-session 模式下的 Flink 集群的配置。 在此过程中...
  • Gobblin CLI

    2079 2025-03-12 《Apache Gobblin 0.17.0》
    Gobblin Commands & Execution Modes Gobblin Commands The Distcp Quick App The OneShot Quick App Developing quick apps for the CLI Implementing new Gobblin commands Gobblin Ser...
  • Creating your first interoperable table

    Creating your first interoperable table Using Apache XTable™ (Incubating) to sync your source tables in different target format involves running sync on your current dataset usi...
  • Procedures

    2063 2025-03-11 《Apache Iceberg 1.8.1》
    Spark Procedures To use Iceberg in Spark, first configure Spark catalogs . Stored procedures are only available when using Iceberg SQL extensions in Spark 3. Usage Procedures c...
  • 10 Tables

    2057 2024-05-07 《R Markdown Cookbook》
    References Tables are one of the primary ways in which we can communicate results in a report. You may often desire to tweak their appearance to suit your particular needs. In th...
  • orm DTD/XSD

    2057 2024-05-25 《Apache JDO 3.2.1》
    JDO defines XML MetaData in jdo files as well as orm files. As always with XML, the metadata must match the defined DTD/XSD for that file type. This section describes the conten...
  • Flink Writes

    2047 2025-03-11 《Apache Iceberg 1.8.1》
    Flink Writes Iceberg support batch and streaming writes With Apache Flink ‘s DataStream API and Table API. Writing with SQL Iceberg support both INSERT INTO and INSERT OVERWRIT...
  • Relation

    2044 2024-06-05 《Ramda 0.2.0》
    countBy difference differenceWith unionWith union gt gte intersection lt lte max min propEq sortBy countBy (a → String) → [a] → {*} Parameters fnThe function u...
  • Collect Information

    Before deploying a cluster, you should collect the following information: The fully qualified domain name (FQDN) of each host in your system. The Ambari Cluster Install wizard s...