Guozhang Wang created KAFKA-6443:
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Summary: KTable involved in multiple joins could result in
duplicate results
Key: KAFKA-6443
URL: https://issues.apache.org/jira/browse/KAFKA-6443
Project: Kafka
Issue Type: Bug
Components: streams
Reporter: Guozhang Wang
Consider the following multi table-table joins:
{code}
table1.join(table2).join(table2); // "join" could be replaced with
"leftJoin" and "outerJoin"
{code}
where {{table2}} is involved multiple times in this multi-way joins. In this
case, when a new record from the source topic of {{table2}} is being
processing, it will send to two children down in the topology and hence may
resulting in duplicated join results depending on the join types.
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