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From "Hequn Cheng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-10188) Solve nondeterministic functions problem for retraction
Date Tue, 21 Aug 2018 06:52:00 GMT
Hequn Cheng created FLINK-10188:
-----------------------------------

             Summary: Solve nondeterministic functions problem for retraction
                 Key: FLINK-10188
                 URL: https://issues.apache.org/jira/browse/FLINK-10188
             Project: Flink
          Issue Type: Bug
          Components: Table API &amp; SQL
            Reporter: Hequn Cheng


Currently, Retraction has not considered non-deterministic functions. For sql like:
{code}
source -> group by -> 
                                     non-window join -> retract_sink
source -> group by -> 
{code}
The group by will send retract messages to join. However, if we add LOCALTIMESTAMP between
group by and join, messages can not be retracted correctly in join, since join retract messages
according to the whole row.



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