Hello kafka community, In a ktable-ktable join, assuming that kt1 has k1 and v1 that contains k2 and kt2 has k2 and v2, is it possible that the (k1, v1, k2, v2) pair is never emitted? I am trying to understand how it works and if any race condition would be possible. If race conditions would not be possible, then, ignoring any deduplication or filtering, what I imagine would be emitted is one of: (k1, v1, null, null), (k1, v1, k2, v2) or (null, null, k2, v2), (k1, v1, k2, v2) If this would be the case, and given our data is immutable in this particular k1 - k2 - v2, I could just filter in cases k1, v1, k2, v2 are all non null and emit only those tuples. But would it be possible that the two messages that are linked, that come to different topics, are concurrently processed? Theoretically I think so? Which would be the solution to this? A linearizable store like a single threaded Redis? Thank you,
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