[jira] [Created] (KAFKA-14834) Improved stream-table and table-table join semantics for versioned stores

["Victoria Xia (Jira)" <ji...@apache.org>]

Victoria Xia created KAFKA-14834:
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             Summary: Improved stream-table and table-table join semantics for versioned stores
                 Key: KAFKA-14834
                 URL: https://issues.apache.org/jira/browse/KAFKA-14834
             Project: Kafka
          Issue Type: Improvement
          Components: streams
            Reporter: Victoria Xia
            Assignee: Victoria Xia


With the introduction of versioned state stores in [KIP-889|https://cwiki.apache.org/confluence/display/KAFKA/KIP-889%3A+Versioned+State+Stores], we should leverage them to provide improved join semantics. 

As described in [KIP-914|https://cwiki.apache.org/confluence/display/KAFKA/KIP-914%3A+Join+Processor+Semantics+for+Versioned+Stores], we will make the following two improvements:
 * stream-table joins will perform a timestamped lookup (using the stream-side record timestamp) if the table is materialized with a versioned store
 * table-table joins, including foreign key joins, will not produce new join results on out-of-order records (by key) from tables materialized with versioned stores



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