rkhachatryan commented on code in PR #19448:
URL: https://github.com/apache/flink/pull/19448#discussion_r880782026
##########
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/OperatorSubtaskState.java:
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@@ -227,6 +229,14 @@ private static void registerSharedState(
for (KeyedStateHandle stateHandle : stateHandles) {
if (stateHandle != null) {
stateHandle.registerSharedStates(sharedStateRegistry,
checkpointID);
+ // Registering state handle to the given sharedStateRegistry
serves two purposes:
+ // 1. let sharedStateRegistry be responsible for cleaning the
state handle,
+ // 2. update the status of the checkpoint in
sharedStateRegistry to which the state
+ // handle belongs
+ sharedStateRegistry.registerReference(
+ new
SharedStateRegistryKey(stateHandle.getStateHandleId().getKeyString()),
+ new StreamStateHandleWrapper(stateHandle),
Review Comment:
Yes, you're right.
Does it make sense to use the same `EmptyDiscardStateObjectForRegister` in
`ChangelogStateBackendHandleImpl`?
The deletion of private state should happen discarding `CompletedCheckpoint`
anyways, right?
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