AHeise commented on a change in pull request #13735:
URL: https://github.com/apache/flink/pull/13735#discussion_r518555888
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/OperatorSubtaskState.java
##########
@@ -64,81 +61,64 @@
/**
* Snapshot from the {@link
org.apache.flink.runtime.state.OperatorStateBackend}.
*/
- @Nonnull
private final StateObjectCollection<OperatorStateHandle>
managedOperatorState;
/**
* Snapshot written using {@link
org.apache.flink.runtime.state.OperatorStateCheckpointOutputStream}.
*/
- @Nonnull
private final StateObjectCollection<OperatorStateHandle>
rawOperatorState;
/**
* Snapshot from {@link
org.apache.flink.runtime.state.KeyedStateBackend}.
*/
- @Nonnull
private final StateObjectCollection<KeyedStateHandle> managedKeyedState;
/**
* Snapshot written using {@link
org.apache.flink.runtime.state.KeyedStateCheckpointOutputStream}.
*/
- @Nonnull
private final StateObjectCollection<KeyedStateHandle> rawKeyedState;
- @Nonnull
private final StateObjectCollection<InputChannelStateHandle>
inputChannelState;
- @Nonnull
private final StateObjectCollection<ResultSubpartitionStateHandle>
resultSubpartitionState;
/**
- * The state size. This is also part of the deserialized state handle.
- * We store it here in order to not deserialize the state handle when
- * gathering stats.
+ * The subpartitions mappings per partition set when the output
operator for a partition was rescaled. The key is
+ * the partition id and the value contains all subtask indexes of the
output operator before rescaling.
*/
- private final long stateSize;
+ private final InflightDataRescalingDescriptor inputRescalingDescriptor;
Review comment:
Added a comment.
```
Note that this field is only set by {@link StateAssignmentOperation} and
will not be persisted in the checkpoint itself as it can only be calculated if
the the post-recovery scale factor is known.
```
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