ThreadLocal memory leak

[nguyendai1296]

We are facing memory leaks due to net.sf.jasperreports.engine.fill.JRSwapFileVirtualizer storing huge object reference in tomcat threadlocal. Please let me know what we can do. Our application is a web application.

06-Jul-2022 19:27:47.956 警告 [Catalina-utility-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [brother2.0##0006] appears to have started a thread named [batik CleanerThread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.lang.Object.wait(Native Method)
 java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:144)
 java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:165)
 org.apache.batik.util.CleanerThread.run(CleanerThread.java:106)
06-Jul-2022 19:27:47.958 重大 [Catalina-utility-1] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [brother2.0##0006] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@4021eaf5]) and a value of type [net.sf.jasperreports.engine.fill.JRSwapFileVirtualizer] (value [net.sf.jasperreports.engine.fill.JRSwapFileVirtualizer@29d19b18]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.