[FLINK-37463] make serialzer in ForStMapState Threadlocal

[mayuehappy]

What is the purpose of the change

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.

Brief change log

make the userValueSerializer and userKeySerializer in ForStMapState ThreadLocal

Verifying this change

This change is a trivial rework

This change is already covered by existing tests

This change added tests and can be verified as follows:

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (yes )
• The runtime per-record code paths (performance sensitive): (yes)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)

[flinkbot]

CI report:

• 10bc584 Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[fredia]

Thanks for the fix, LGTM.

It seems that the failure of EventTimeWindowCheckpointingITCase is not related to this PR, as EventTimeWindowCheckpointingITCase is using ForStSyncKeyedStateBackend.

[fredia]

@flinkbot run azure

[RocMarshal]

Thanks for the fix, LGTM +1.

[mayuehappy]

@flinkbot run azure

[mayuehappy]

@fredia I see that the single test org.apache.flink.test.checkpointing.RescaleCheckpointManuallyITCase seems to have failed, which seems not related to my commit. It seems that the pod has exited directly. Where can I see the error?

[fredia]

@fredia I see that the single test org.apache.flink.test.checkpointing.RescaleCheckpointManuallyITCase seems to have failed, which seems not related to my commit. It seems that the pod has exited directly. Where can I see the error?

A coredump occurred while running RescaleCheckpointManuallyITCase, the coredump file may be here.

I reverted the integration of ForSt in RescaleCheckpointManuallyITCase, please help to rebase this PR.

[mayuehappy]

@flinkbot run azure

[mayuehappy]

@fredia
Thanks for your information, I have rebased latest master branch. PTAL

[fredia]

@flinkbot run azure

[mayuehappy]

@flinkbot run azure