Tzu-Li (Gordon) Tai created FLINK-4582:
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Summary: 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
Fix For: 1.2.0
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 and out-of-core state
backends 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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