masteryhx commented on code in PR #19142:
URL: https://github.com/apache/flink/pull/19142#discussion_r853015290
##########
flink-runtime/src/main/java/org/apache/flink/runtime/state/StateBackendLoader.java:
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@@ -358,17 +360,51 @@ public static boolean
stateBackendFromApplicationOrConfigOrDefaultUseManagedMemo
return false;
}
+ /**
+ * Load state backend which may wrap the original state backend for
recovery.
+ *
+ * @param originalStateBackend StateBackend loaded from application or
config.
+ * @param classLoader User code classloader.
+ * @param keyedStateHandles The state handles for restore.
+ * @return Wrapped state backend for recovery.
+ * @throws DynamicCodeLoadingException Thrown if keyed state handles of
wrapped state backend
+ * are found and the class was not found or could not be instantiated.
+ */
+ public static StateBackend loadStateBackendFromKeyedStateHandles(
+ StateBackend originalStateBackend,
+ ClassLoader classLoader,
+ Collection<KeyedStateHandle> keyedStateHandles)
+ throws DynamicCodeLoadingException {
+ if (keyedStateHandles.stream()
+ .anyMatch(stateHandle -> stateHandle instanceof
ChangelogStateBackendHandle)
+ && !isChangelogStateBackend(originalStateBackend)) {
Review Comment:
Agree. I have swapped them.
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