Aitozi opened a new issue, #2621:
URL: https://github.com/apache/incubator-paimon/issues/2621

   ### Search before asking
   
   - [X] I searched in the 
[issues](https://github.com/apache/incubator-paimon/issues) and found nothing 
similar.
   
   
   ### Paimon version
   
   0.6
   
   ### Compute Engine
   
   Flink
   
   ### Minimal reproduce step
   
   ```java
           sql(
                   "CREATE TABLE DIM_2 (i INT PRIMARY KEY NOT ENFORCED, j INT, 
k1 INT, k2 INT) WITH"
                           + " ('continuous.discovery-interval'='1 ms', 
'sequence.field' = 'j')");
           sql("INSERT INTO DIM_2 VALUES (1, 11, 111, 1111), (2, 22, 222, 
2222)");
   
           String query =
                   "SELECT T.i, D.j, D.k1, D.k2 FROM T LEFT JOIN DIM_2 for 
system_time as of T.proctime AS D ON T.i = D.i";
           BlockingIterator<Row, Row> iterator = 
BlockingIterator.of(sEnv.executeSql(query).collect());
   
           sql("INSERT INTO T VALUES (1), (2), (3)");
           List<Row> result = iterator.collect(3);
           assertThat(result)
                   .containsExactlyInAnyOrder(
                           Row.of(1, 11, 111, 1111),
                           Row.of(2, 22, 222, 2222),
                           Row.of(3, null, null, null));
   
           sql("INSERT INTO DIM_2 VALUES (2, 11, 444, 4444), (3, 33, 333, 
3333)");
           Thread.sleep(2000); // wait refresh
           sql("INSERT INTO T VALUES (1), (2), (3), (4)");
           result = iterator.collect(4);
           assertThat(result)
                   .containsExactlyInAnyOrder(
                           Row.of(1, 11, 111, 1111),
                           Row.of(2, 22, 222, 2222), // not change
                           Row.of(3, 33, 333, 3333),
                           Row.of(4, null, null, null));
   
           iterator.close()
   ```
   
   when we refresh with data of old sequence, the date in rocksdb cache should 
not be refreshed, otherwise, the join result is unstable.
   
   ### What doesn't meet your expectations?
   
   .
   
   ### Anything else?
   
   _No response_
   
   ### Are you willing to submit a PR?
   
   - [X] I'm willing to submit a PR!


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