[jira] [Created] (FLINK-26933) FlinkKinesisConsumer incorrectly determines shards as newly discovered when tested against Kinesalite when consuming DynamoDB streams

["Arian Rohani (Jira)" <ji...@apache.org>]

Arian Rohani created FLINK-26933:
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             Summary: FlinkKinesisConsumer incorrectly determines shards as newly discovered when tested against Kinesalite when consuming DynamoDB streams
                 Key: FLINK-26933
                 URL: https://issues.apache.org/jira/browse/FLINK-26933
             Project: Flink
          Issue Type: Bug
          Components: Connectors / Kinesis
            Reporter: Arian Rohani


This ticket is related to https://issues.apache.org/jira/browse/FLINK-5075

The kinesalite (mock implementation of kinesis) does not take exclusiveShardStartId into account when performing a DescribeStream operation. This causes the FlinkKinesisConsumer to resubscribe to already subscribed shards and reconsume the records when consuming a DynamoDB stream. A fix was implemented for the Kinesis stream inside of the listShards(...) method, but this logic (see [here|https://github.com/apache/flink/blame/b2ca390d478aa855eb0f2028d0ed965803a98af1/flink-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/proxy/KinesisProxy.java#L568]) is not executed when connecting to a DynamoDB stream.



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