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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 ... -
Neo4j
Description Key features Options uri [string] username [string] password [string] max_batch_size[Integer] write_mode bearer_token [string] kerberos_ticket [string] databas... -
Performance
Read performance Write performance Accumulo can be tuned to improve read and write performance. Read performance Enable caching on tables to reduce reads to disk. Enable b... -
参数优先级
参数优先级 例子 参数优先级 DolphinScheduler 中所涉及的参数值的定义可能来自三种类型： 项目级别参数 ：在项目管理中定义的项目级别参数 全局参数 ：在工作流保存页面定义时定义的变量 启动参数 ：在工作流启动页面定义的变量 上游任务传递的参数 ：上游任务传递过来的参数 本地参数 ：节点的自有变量，用户在“自定义参数”定义的变量，并... -
Streaming Reads
Spark Streaming Spark Streaming Structured Streaming reads are based on Hudi’s Incremental Query feature, therefore streaming read can return data for which commits and base fil... -
Object States
Detecting Object State Persisting an object Updating an object Deleting an object Possible state transitions JDO manages the lifecycle of an object, from creation (Transient ... -
Hive JDBC Driver
Instructions Install Hive JDBC JDBC URL Example Instructions Kyuubi is fully compatible with Hive JDBC and ODBC drivers that let you connect to popular Business Intelligence ... -
Aggregation Functions
Data Setup min Using min() with Lists max stDev stDevP percentileCont percentileDisc count Using count(expression) to return the number of values Counting non-null value... -
Client Properties (2.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... -
4. 安装 Ambari
要在集群中的单个主机上安装 Ambari 服务器，请完成以下步骤： 访问 Ambari 存储库 下载软件 下载 Ambari 存储库 安装 Ambari 服务器 设置 Ambari 服务器