The GitHub Actions job "Flink CDC CI" on flink-cdc.git/FLINK-40040 has failed.
Run started by GitHub user Zhile (triggered by yuxiqian).

Head commit for run:
9465a73200154aaa017a3ba4aadc3e2f2a1bea62 / Jiyong Wang <[email protected]>
[FLINK-40040][cdc-runtime] Wrap coordinator failure in SerializedThrowable 
across RPC boundary

SchemaRegistry.failJob now wraps the failure cause into a SerializedThrowable
before it crosses the operator-coordinator RPC boundary, and runInEventLoop
routes through failJob so all exits share the wrapping.

Otherwise an exception whose class only lives in the user classloader (e.g. the
MySQL driver's com.mysql.cj.exceptions.ConnectionIsClosedException raised during
table discovery) fails to deserialize on the receiving side, where 
flink-rpc-akka
uses an isolated classloader, with ClassNotFoundException. The coordination
response is then lost and the SchemaOperator request stalls until rpcTimeout,
failing with a misleading TimeoutException and turning a transient error into a
restart loop that only a full job restart recovers from.

Report URL: https://github.com/apache/flink-cdc/actions/runs/28521834470

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