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https://issues.apache.org/jira/browse/FLINK-6600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tzu-Li (Gordon) Tai updated FLINK-6600:
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Description:
Currently, only the key serializer is included in what's written for a keyed
state backend in checkpoints. The namespace and state serializer already have
their config snapshots included in the individual registered state's metainfo.
We should also include the configuration snapshot of the key serializer in
{{KeyedBackendSerializationProxy}} so that we can also be flexible in allowing
migration / transformation of the key in the future.
was:
Currently, only the key serializer is included in what's written for a keyed
state's metainfo in checkpoints. The namespace and state serializer already
have their config snapshots included in the metainfo.
We should also include the configuration snapshot of the key serializer in
there so that we can also be flexible in allowing migration / transformation of
the key in the future.
> Add key serializer's config snapshot to KeyedBackendSerializationProxy
> ----------------------------------------------------------------------
>
> Key: FLINK-6600
> URL: https://issues.apache.org/jira/browse/FLINK-6600
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Reporter: Tzu-Li (Gordon) Tai
> Assignee: Tzu-Li (Gordon) Tai
> Fix For: 1.3.0, 1.4.0
>
>
> Currently, only the key serializer is included in what's written for a keyed
> state backend in checkpoints. The namespace and state serializer already have
> their config snapshots included in the individual registered state's metainfo.
> We should also include the configuration snapshot of the key serializer in
> {{KeyedBackendSerializationProxy}} so that we can also be flexible in
> allowing migration / transformation of the key in the future.
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