StefanRRichter commented on a change in pull request #6875: [FLINK-9808] [state
backends] Migrate state when necessary in state backends
URL: https://github.com/apache/flink/pull/6875#discussion_r226679606
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File path:
flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/AbstractRocksDBState.java
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@@ -154,6 +159,29 @@ public void setCurrentNamespace(N namespace) {
return backend.db.get(columnFamily,
tmpKeySerializationView.getCopyOfBuffer());
}
+ public byte[] migrateSerializedValue(
Review comment:
I think this method does not belong here. This class is used to interact
with the state during event processing, I suggest to keep that separated from
migration concerns. If you are looking for a way to differentiate the logic for
different states, you could also just use a factor that gives you different
implementations of some `StateValueTransformer`.
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