Chesnay Schepler created FLINK-8645:
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Summary: Support convenient extension of parent-first ClassLoader
patterns
Key: FLINK-8645
URL: https://issues.apache.org/jira/browse/FLINK-8645
Project: Flink
Issue Type: Improvement
Components: Configuration
Affects Versions: 1.5.0
Reporter: Chesnay Schepler
Fix For: 1.5.0
The option {{classloader.parent-first-patterns}} defines a list of class
pattern that should always be loaded through the parent class-loader. The
default value contains all classes that are effectively required to be loaded
that way for Flink to function.
This list cannot be extended in a convenient way, as one would have to manually
copy the existing default and append new entries. This makes the configuration
brittle in light of version upgrades where we may extend the default, and also
obfuscates the configuration a bit.
I propose to separate this option into
{{classloader.parent-first-patterns.base}}, which subsumes the existing option,
and {{classloader.parent-first-patterns.append}} which is automatically
appended to the base.
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