vcrfxia commented on code in PR #13622:
URL: https://github.com/apache/kafka/pull/13622#discussion_r1177112691
##########
docs/streams/developer-guide/dsl-api.html:
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@@ -2830,6 +2846,9 @@ <h5><a class="toc-backref" href="#id34">KTable-KTable
Foreign-Key
</ul>
</div></blockquote>
</li>
+ <li>When the table is <a
class="reference internal" href="#versioned-state-stores"><span class="std
std-ref">versioned</span></a>,
+ the table record to join with is
determined by performing a timestamped lookup, i.e., the table record which is
joined will be the latest-by-timestamp record with timestamp
+ less than or equal to the stream
record timestamp. If the stream record timestamp is older than the table's
history retention, then the record is dropped.</li>
Review Comment:
Only the stream-table join performs timestamped-lookups; table-table joins
drop out-of-order records but only ever call `get(key)` and not `get(key,
asOfTimestamp)`.
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