Gary Yao created FLINK-8067:
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Summary: User code ClassLoader not set before calling
ProcessingTimeCallback
Key: FLINK-8067
URL: https://issues.apache.org/jira/browse/FLINK-8067
Project: Flink
Issue Type: Bug
Components: Streaming
Affects Versions: 1.4.0
Reporter: Gary Yao
Priority: Minor
Fix For: 1.5.0
The user code ClassLoader is not set as the context ClassLoader for the thread
invoking {{ProcessingTimeCallback#onProcessingTime(long timestamp)}}:
https://github.com/apache/flink/blob/84a07a34ac22af14f2dd0319447ca5f45de6d0bb/flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/StreamTask.java#L222
This is problematic, for example, if user code dynamically loads classes in
{{ProcessFunction#onTimer(long timestamp, OnTimerContext ctx, Collector<O>
out)}} using the current thread's context ClassLoader (also see FLINK-8005).
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