https://bz.apache.org/bugzilla/show_bug.cgi?id=62897
Bug ID: 62897
Summary: Provide a property to disable
WebappClassLoaderBase.checkThreadLocalsForLeaks()
Product: Tomcat 9
Version: 9.0.x
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: awilkin...@pivotal.io
Target Milestone: -----
When running on Java 11 with clearReferencesObjectStreamClassCaches and
clearReferencesRmiTargets both set to false, a number of reflective access
warnings are still generated when the web app class loader is stopped:
WARNING: Illegal reflective access by
org.apache.catalina.loader.WebappClassLoaderBase
(file:/Users/awilkinson/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.12/tomcat-embed-core-9.0.12.jar)
to field java.lang.Thread.threadLocals
WARNING: Illegal reflective access by
org.apache.catalina.loader.WebappClassLoaderBase
(file:/Users/awilkinson/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.12/tomcat-embed-core-9.0.12.jar)
to field java.lang.Thread.inheritableThreadLocals
WARNING: Illegal reflective access by
org.apache.catalina.loader.WebappClassLoaderBase
(file:/Users/awilkinson/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.12/tomcat-embed-core-9.0.12.jar)
to field java.lang.ThreadLocal$ThreadLocalMap.table
WARNING: Illegal reflective access by
org.apache.catalina.loader.WebappClassLoaderBase
(file:/Users/awilkinson/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.12/tomcat-embed-core-9.0.12.jar)
to method java.lang.ThreadLocal$ThreadLocalMap.expungeStaleEntries()
WARNING: Illegal reflective access by
org.apache.catalina.loader.WebappClassLoaderBase
(file:/Users/awilkinson/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.12/tomcat-embed-core-9.0.12.jar)
to field java.lang.ThreadLocal$ThreadLocalMap$Entry.value
I believe these all originate from code that's called by
WebappClassLoaderBase.checkThreadLocalsForLeaks(). It would be useful to have a
property that allows these checks to be disabled in the same way as the others.
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