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Posted to issues@flink.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2025/03/12 06:20:00 UTC

[jira] [Updated] (FLINK-37463) Make ForStMapState Serializer ThreadLocal

     [ https://issues.apache.org/jira/browse/FLINK-37463?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-37463:
-----------------------------------
    Labels: pull-request-available  (was: )

> 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: 2.0.0
>            Reporter: Yue Ma
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.0.0
>
>
> 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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