Danny Cranmer created FLINK-20629:
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             Summary: [Kinesis][EFO] Migrate from DescribeStream to 
DescribeStreamSummary
                 Key: FLINK-20629
                 URL: https://issues.apache.org/jira/browse/FLINK-20629
             Project: Flink
          Issue Type: Improvement
          Components: Connectors / Kinesis
    Affects Versions: 1.12.0
            Reporter: Danny Cranmer
             Fix For: 1.12.1


*Background*
The Kinesis EFO connector invokes {{DescribeStream}} during startup to acquire 
the stream ARN. This call also includes the shard information and has a TPS of 
10. A similar service exists, {{DescribeStreamSummary}} that has a TPS of 20 
and a lighter response payload size.

During startup sources with high parallelism compete to call this service (in 
{{LAZY}} mode), resulting in backoff and retry. Essentially the startup time 
can grow by 1s for every 10 parallelism, due to the 10 TPS. Migrating to 
{{DescribeStreamSummary}} will improve startup time.

*Scope*
Migrate call to {{DescribeStream}} to use {{DescribeStreamSummary}} instead.

*Note*
I have targeted {{1.12.1}}, let me know if we should instead target {{1.13}}



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