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Roc Marshal edited comment on FLINK-22125 at 4/15/21, 2:42 AM: --------------------------------------------------------------- When we are judging whether mapstate is empty or not, there may be some logical loopholes, such as using 'is_ empty () 'method instead of`_ is_ empty ` variable was (Author: rocmarshal): When we judge whether mapstate is empty or not, there may be some logical loopholes, such as using 'is_ empty () 'method instead of`_ is_ empty ` variable > Revisit the return value of MapState.get when the key doesn't exist > ------------------------------------------------------------------- > > Key: FLINK-22125 > URL: https://issues.apache.org/jira/browse/FLINK-22125 > Project: Flink > Issue Type: Sub-task > Components: API / Python > Affects Versions: 1.13.0 > Reporter: Dian Fu > Priority: Major > Fix For: 1.13.0 > > > Currently, it will thrown KeyError if the key doesn't exist for MapState in > Python DataStream API. However, it returns null in the Java DataStream API. > Maybe we should keep the behavior the same across Python DataStream API and > Java DataStream API. -- This message was sent by Atlassian Jira (v8.3.4#803005)