If you’re familiar with Java as a programming language, you may have come across the following message: java.lang.OutOfMemoryError: Java heap space. We recently got that message in one of the services that we’re currently working on. To better understand why this happens, it’s good to get a Java memory heap dump for further analysis.
After parsing the heap dump in both Eclipse MAT and Visual VM, I noticed something strange. My heap dump felt obfuscated and showed lots of objects named ‘Unresolved Name 0x’.
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