Github user sihuazhou commented on the issue:
https://github.com/apache/flink/pull/5705
@StefanRRichter Sorry for pinging you again in this PR, but I found there
maybe be another issue for `full checkpoint`. It's about the
`kvStateInformation`, we should create a deep copy of `kvStateInformation` when
taking snapshot, currently we use the code `this.kvStateInformationCopy = new
ArrayList<>(stateBackend.kvStateInformation.values());`, but this is not a deep
copy indeed because the `Serializers` in `RegisteredKeyedBackendStateMetaInfo`
maybe not stateless. If you also think this is a problem, instead of make a new
PR for that I'd like to change the code to cover it in this PR, WDYT?
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