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ORM支持Hadoop DB(ORM support for Hadoop DB)

我正在尝试使用Hadoop和Spring(MVC,IOC,数据,安全性)来引导应用程序。 我想知道哪种ORM适合这些技术。


I'm trying to bootstrap an application using Hadoop and Spring (MVC, IOC, Data, Security ). I'm wondering which ORM fits with those technologies.


原文:https://stackoverflow.com/questions/28921858
更新时间:2021-10-13 10:10

最满意答案

从DAS 3.1.0 RC 1开始,这可以实现。 您可以按照以下步骤进行试用。

  1. 这里下载DAS 3.1.0 RC1。
  2. 使用有效负载创建事件流,并添加名为_timestamp的属性并将属性类型设置为long
  3. 保持事件选择有效负载属性。 (请注意,您将无法选择_timestamp属性,因此请保持原样)
  4. 现在通过提供有效载荷数据以及_timestamp时代来模拟事件,例如 - 1450206041000.数据资源管理器将向您显示2015-12-16 00:30:41收到的事件

From DAS 3.1.0 RC 1 onwards this can be achieved. You can follow the steps below to try it out.

  1. Download DAS 3.1.0 RC1 from here.
  2. Create an event stream with your payload and also add an attribute named _timestamp and set the attribute type as long.
  3. Persist the Event selecting your payload attributes. (Please note that you will not be able to select the _timestamp attribute so leave it as it is)
  4. Now simulate a event by providing your payload data along with the _timestamp epoch e.g - 1450206041000. The data explorer will show you an event received in 2015-12-16 00:30:41

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