psolomin commented on code in PR #23540:
URL: https://github.com/apache/beam/pull/23540#discussion_r1142951411
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sdks/java/io/amazon-web-services2/src/main/java/org/apache/beam/sdk/io/aws2/kinesis/KinesisIO.java:
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@@ -147,6 +150,42 @@
* Read#withCustomRateLimitPolicy(RateLimitPolicyFactory)}. This requires
implementing {@link
* RateLimitPolicy} with a corresponding {@link RateLimitPolicyFactory}.
*
+ * <h4>Enhanced Fan-Out</h4>
+ *
+ * Kinesis IO supports Consumers with Dedicated Throughput (Enhanced Fan-Out,
EFO). This type of
+ * consumer doesn't have to contend with other consumers that are receiving
data from the stream.
+ *
+ * <p>More details can be found here: <a
+ *
href="https://docs.aws.amazon.com/streams/latest/dev/enhanced-consumers.html";>Consumers
with
+ * Dedicated Throughput</a>
+ *
+ * <p>EFO can be enabled for one or more {@link KinesisIO.Read} instances via
pipeline options:
Review Comment:
> Dataflow
To me, introducing a config which has different semantics on different
runners is even more questionable. But it sounds like we need an opinion of
someone who could say if this is a norm for other IOs.
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