jaketf commented on a change in pull request #11596:
URL: https://github.com/apache/beam/pull/11596#discussion_r427643888
##########
File path:
sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/healthcare/HL7v2IO.java
##########
@@ -415,10 +423,29 @@ private Message fetchMessage(HealthcareApiClient client,
String msgId)
}
}
- /** List HL7v2 messages in HL7v2 Stores with optional filter. */
+ /**
+ * List HL7v2 messages in HL7v2 Stores with optional filter.
+ *
+ * <p>This transform is optimized for dynamic splitting of message.list
calls for large batches of
+ * historical data and assumes rather continuous stream of sendTimes. It
will dynamically
+ * rebalance resources to handle "peak traffic times" but will waste
resources if there are large
+ * durations (days) of the sendTime dimension without data.
Review comment:
note to self: remove reference to "dynamically rebalance" as this is not
yet supported by dataflow runner.
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