qinjunjerry commented on a change in pull request #13309:
URL: https://github.com/apache/flink/pull/13309#discussion_r482453649
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File path:
flink-libraries/flink-state-processing-api/src/main/java/org/apache/flink/state/api/WritableSavepoint.java
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@@ -88,40 +106,119 @@ public final void write(String path) {
List<BootstrapTransformationWithID<?>>
newOperatorTransformations = metadata.getNewOperators();
DataSet<OperatorState> newOperatorStates =
writeOperatorStates(newOperatorTransformations, savepointPath);
- List<OperatorState> existingOperators =
metadata.getExistingOperators();
+ List<OperatorState> existingOperatorStateList =
metadata.getExistingOperators();
- DataSet<OperatorState> finalOperatorStates =
unionOperatorStates(newOperatorStates, existingOperators);
+ DataSet<OperatorState> finalOperatorStates;
+ if (existingOperatorStateList.isEmpty()) {
+ finalOperatorStates = newOperatorStates;
+ } else {
+ DataSet<OperatorState> existingOperatorStates =
newOperatorStates.getExecutionEnvironment()
+ .fromCollection(existingOperatorStateList);
+
+ existingOperatorStates
+ .map(new OperatorState2PathSetMapFunction())
+ .flatMap(new
FlatMapFunction<Set<Optional<Path>>, Optional<Path>>() {
+ @Override
+ public void flatMap(Set<Optional<Path>>
value, Collector<Optional<Path>> out) throws Exception {
+ for (Optional<Path> path :
value) {
+ out.collect(path);
+ }
+ }
+ })
+ .filter(Optional<Path>::isPresent)
+ .map(Optional<Path>::get)
+ .returns(TypeInformation.of(new
TypeHint<Path>(){}))
Review comment:
Indeed.
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