[jira] [Commented] (FLINK-4582) Allow FlinkKinesisConsumer to adapt for AWS DynamoDB Streams

["Devin Thomson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-4582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16664305#comment-16664305 ] 

Devin Thomson commented on FLINK-4582:
--------------------------------------

[~yxu-lyft] [~tzulitai]

Hey guys! Devin from Tinder Engineering here (https://www.linkedin.com/in/devin-thomson-44a35651/).

I've been following this ticket for a couple of weeks now. We have a strong need for this at Tinder so I went ahead and built it! Here's a PR:

[https://github.com/tinder-dthomson/flink/pull/3]

I am not a contributor so I had to fork flink. If you want to take a look and let me know what you think, I'd be glad to contribute this back to the community!

Also [~yxu-lyft] I don't mean to step on your toes here - if you have a better solution I am of course happy to use that instead!

 

- Devin

> Allow FlinkKinesisConsumer to adapt for AWS DynamoDB Streams
> ------------------------------------------------------------
>
>                 Key: FLINK-4582
>                 URL: https://issues.apache.org/jira/browse/FLINK-4582
>             Project: Flink
>          Issue Type: New Feature
>          Components: Kinesis Connector, Streaming Connectors
>            Reporter: Tzu-Li (Gordon) Tai
>            Assignee: Ying Xu
>            Priority: Major
>
> AWS DynamoDB is a NoSQL database service that has a CDC-like (change data capture) feature called DynamoDB Streams (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html), which is a stream feed of item-level table activities.
> The DynamoDB Streams shard abstraction follows that of Kinesis Streams with only a slight difference in resharding behaviours, so it is possible to build on the internals of our Flink Kinesis Consumer for an exactly-once DynamoDB Streams source.
> I propose an API something like this:
> {code}
> DataStream dynamoItemsCdc = 
>   FlinkKinesisConsumer.asDynamoDBStream(tableNames, schema, config)
> {code}
> The feature adds more connectivity to popular AWS services for Flink, and combining what Flink has for exactly-once semantics, out-of-core state backends, and queryable state with CDC can have very strong use cases. For this feature there should only be an extra dependency to the AWS Java SDK for DynamoDB, which has Apache License 2.0.



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