Threads are going to be renewed over time to try and avoid a probable memory leak.

Posted 2023-03-24

AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/solr] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@7266f274]) and a value of type [com.chenlb.mmseg4j.analysis.MMSegTokenizer] (value [(solrpingquery,startOffset=0,endOffset=13,type=letter)]) 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.

这是类加载器内存泄露的一个问题，具体可以看这里：
http://stackoverflow.com/questions/7788280/memory-leak-when-redeploying-application-in-tomcat

你可以利用JProfile这一类的工具或者用jhat导出类情况分析。分析下当前哪里存在引用导致的泄露，再更改相应的代码，解决这类问题。祝你好运！ 参考技术A 线程需要及时更新以避免可能的存储泄露。 参考技术B 线程将不断的重新尝试避免可能的内存漏洞。