Uwe Schindler created LUCENE-6921:
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Summary: Fix SPIClassIterator#isParentClassLoader to don't require
extra permissions
Key: LUCENE-6921
URL: https://issues.apache.org/jira/browse/LUCENE-6921
Project: Lucene - Core
Issue Type: Improvement
Reporter: Uwe Schindler
Assignee: Uwe Schindler
Priority: Minor
Fix For: Trunk, 5.5
This is not really a big issue, because most setups use a "good" context
classloader. The context classloader is required by the Java ServiceProvider
standard to look for META-INF classes. To work around issues in some setups,
the analysis and codec SPIs also scan our own classloader, if it is not a
parent of the context one. This check requires permissions, if we are not a
parent.
This will fix the parent check to simply return false (and enforce classpath
rescan) if we don't have enough permissions. This is the right thing to do,
because if we have no permissions, we are also not a parent!
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