Xuannan Su created FLINK-31943:
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Summary: Multiple t_env cause class loading problem
Key: FLINK-31943
URL: https://issues.apache.org/jira/browse/FLINK-31943
Project: Flink
Issue Type: Bug
Components: API / Python
Affects Versions: 1.17.0
Reporter: Xuannan Su
Attachments: flink-sql-connector-kafka-1.17.0.jar,
pyflink_classloader.py
When a PyFlink process creates multiple StreamTableEnvironment with different
EnvironmentSettings and sets the "pipeline.jars" at the first created t_env, it
appears that the jar is not added to the classloader of the first created t_env.
After digging a little bit, the reason may be that when creating the second
table environment with a new EnvironmentSettings, the context classloader
overwrites by a new classloader, see `EnvironmentSettings.Builder.build` method.
I uploaded the script to reproduce the problem.
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