[HDDS-11060] ReflectionsException caused by bad magic number

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: OM
• Labels: newbie pull-request-available
• Assignee: Sarveksha Yeshavantha Raju
• Reporter: Tsz-wo Sze
• Created: 24/Jun/24 01:43
• Updated: 10/Jul/24 06:50
• Resolved: 10/Jul/24 06:49

Description

When DEBUG log is enabled, there are many ReflectionsException as below

2024-06-23 23:27:57,490 DEBUG [org.reflections-scanner-0]-org.reflections.Reflections: could not scan file META-INF/MANIFEST.MF in url jar:file:/opt/.../ozone-manager-VERSION.jar!/ with scanner SubTypesScanner
org.reflections.ReflectionsException: could not create class object from file META-INF/MANIFEST.MF
	at org.reflections.scanners.AbstractScanner.scan(AbstractScanner.java:32)
	at org.reflections.Reflections.scan(Reflections.java:253)
	at org.reflections.Reflections$1.run(Reflections.java:198)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:750)
Caused by: org.reflections.ReflectionsException: could not create class file from MANIFEST.MF
	at org.reflections.adapters.JavassistAdapter.getOfCreateClassObject(JavassistAdapter.java:102)
	at org.reflections.adapters.JavassistAdapter.getOfCreateClassObject(JavassistAdapter.java:24)
	at org.reflections.scanners.AbstractScanner.scan(AbstractScanner.java:30)
	... 7 more
Caused by: java.io.IOException: bad magic number: 4d616e69
	at javassist.bytecode.ClassFile.read(ClassFile.java:825)
	at javassist.bytecode.ClassFile.<init>(ClassFile.java:154)
	at org.reflections.adapters.JavassistAdapter.getOfCreateClassObject(JavassistAdapter.java:100)
	... 9 more