I've upgraded a Java microservice from Java 8 to Java 17, and I am encountering an "Out of Memory" (OOM) issue when processing bulk records. In heap dumps, the suspect is identified as com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext loaded by org.springframework.boot.loader.LaunchedURLClassLoader, occupying 22.54%. I haven't found any relevant information in the heap dump related to my microservice.
And I have hit a dead end trying to find the memory leak. Is there any other reason which might be causing the issue?