Github user hsaputra commented on a diff in the pull request:
https://github.com/apache/flink/pull/1008#discussion_r36825210
--- Diff:
flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/graph/StreamConfig.java
---
@@ -198,12 +199,26 @@ public void setStreamOperator(StreamOperator<?>
operator) {
}
}
}
-
- @SuppressWarnings({ "unchecked" })
+
public <T> T getStreamOperator(ClassLoader cl) {
try {
- return (T)
InstantiationUtil.readObjectFromConfig(this.config, SERIALIZEDUDF, cl);
- } catch (Exception e) {
+ @SuppressWarnings("unchecked")
+ T result = (T)
InstantiationUtil.readObjectFromConfig(this.config, SERIALIZEDUDF, cl);
+ return result;
+ }
+ catch (ClassNotFoundException e) {
+ String classLoaderInfo =
ClassLoaderUtil.getUserCodeClassLoaderInfo(cl);
+ boolean loadableDoubleCheck =
ClassLoaderUtil.validateClassLoadable(e, cl);
+
+ String exceptionMessage = "Cannot load user class: " +
e.getMessage()
+ + "\nClassLoader info: " +
classLoaderInfo +
+ (loadableDoubleCheck ?
+ "Class was actually
found in classloader - deserialization issue." :
+ "Class not resolveable
through given classloader.");
--- End diff --
small nit on message: Class was not resolvable
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