Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/4232#discussion_r125034182
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionGraphBuilder.java
---
@@ -223,19 +223,21 @@ public static ExecutionGraph buildGraph(
// if specified in the application, use from there,
otherwise load from configuration
final StateBackend metadataBackend;
- final StateBackend applicationConfiguredBackend =
snapshotSettings.getDefaultStateBackend();
+ final SerializedValue<StateBackend>
applicationConfiguredBackend = snapshotSettings.getDefaultStateBackend();
if (applicationConfiguredBackend != null) {
- metadataBackend = applicationConfiguredBackend;
+ try {
+ metadataBackend =
applicationConfiguredBackend.deserializeValue(classLoader);
+ } catch (IOException | ClassNotFoundException
e) {
+ throw new JobExecutionException(jobId,
"Could not instantiate configured state backend.", e);
+ }
log.info("Using application-defined state
backend for checkpoint/savepoint metadata: {}.",
applicationConfiguredBackend);
--- End diff --
Good catch!
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