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https://issues.apache.org/jira/browse/FLINK-37463?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weijie Guo updated FLINK-37463:
-------------------------------
    Fix Version/s: 2.1.0
                       (was: 2.0.0)

> Make ForStMapState Serializer ThreadLocal
> -----------------------------------------
>
>                 Key: FLINK-37463
>                 URL: https://issues.apache.org/jira/browse/FLINK-37463
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / State Backends
>    Affects Versions: 2.1.0
>            Reporter: Yue Ma
>            Assignee: Yue Ma
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.1.0
>
>
> Now, when using *_ForStMapState_* for asynchronous state reading and writing, 
>  *_userValueSerializer_* in _ForStMapState_ will be used to serialize and 
> deserialize the data. However, in asynchronous execution mode, multiple 
> threads may use the same *_userValueSerializer_* instance for serialization 
> and deserialization at the same time, which may cause some multi-thread 
> conflicts in Serializer (eg: Kryo), so we need to make the 
> *_userValueSerializer_* and *_userKeySerializer_* in *_ForStMapState_* 
> ThreadLocal to avoid these problems.



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