je-ik commented on code in PR #39249:
URL: https://github.com/apache/beam/pull/39249#discussion_r3549961744
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runners/kafka-streams/src/main/java/org/apache/beam/runners/kafka/streams/translation/KafkaStreamsTranslationContext.java:
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@@ -34,6 +35,12 @@ public class KafkaStreamsTranslationContext {
/** Prefix for the per-job bootstrap topic Impulse reads from. */
private static final String IMPULSE_BOOTSTRAP_TOPIC_PREFIX =
"__beam_impulse_";
+ /** Prefix for the per-transform bootstrap topic a primitive Read reads
from. */
+ private static final String READ_BOOTSTRAP_TOPIC_PREFIX = "__beam_read_";
Review Comment:
Do we need per-transform topic? Could we just fan-out the single element to
all Impulse transforms? It would require analysis of the Pipeline DAG before
translation and then maybe add s single ParDo that will do the fan-out? Or it
could be done implicitly.
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