将AWS Dynamodb备份到S3 [英] Backup AWS Dynamodb to S3

问题描述

在 Amazon文档上已建议使用 http://aws.amazon.com/dynamodb/ 等，您可以使用Elastic Map Reduce来备份dynamodb表，

我对此有一个大致的了解，但对此却找不到任何指南或教程，

It has been suggested on Amazon docs http://aws.amazon.com/dynamodb/ among other places, that you can backup your dynamodb tables using Elastic Map Reduce,
I have a general understanding of how this could work but I couldn't find any guides or tutorials on this,

所以我的问题是如何使dynamodb备份自动化（使用EMR）？

So my question is how can I automate dynamodb backups (using EMR)?

到目前为止，我想我需要使用一个映射函数创建一个流作业，该函数从dynamodb中读取数据，并将reducemodb的数据写入到S3中，我相信这些可以用Python（或Java或其他几种语言）编写。

So far, I think I need to create a "streaming" job with a map function that reads the data from dynamodb and a reduce that writes it to S3 and I believe these could be written in Python (or java or a few other languages).

任何注释，澄清，代码示例，更正均受到赞赏。

Any comments, clarifications, code samples, corrections are appreciated.

推荐答案

随着AWS Data Pipeline的引入以及用于dynamodb到S3备份的现成模板，最简单的方法是在Data Pipeline中安排备份 [链接] ，

With introduction of AWS Data Pipeline, with a ready made template for dynamodb to S3 backup, the easiest way is to schedule a back up in the Data Pipeline [link],

需求（数据转换，非常精细的谷物控制...）考虑@greg

In case you have special needs (data transformation, very fine grain control ...) consider the answer by @greg

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