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ConcurrentModificationException while getting ScanResult output

See original GitHub issue

Sometimes this happens:

java.util.ConcurrentModificationException
 	at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:937)
 	at java.base/java.util.ArrayList$Itr.next(ArrayList.java:891)
 	at io.github.classgraph.ScanResult.getResourcesMatchingPattern(ScanResult.java:383)

My call looks innocent enough:

val configUrls = new ClassGraph().scan()
    .getResourcesMatchingPattern(configRegex.r.pattern)
    .asScala
    .map(_.getURL)

Is it possible to fix it?

Issue Analytics

State:
Created 5 years ago
Comments:45 (27 by maintainers)

Top GitHub Comments

1reaction

pshirshovcommented, Oct 11, 2018

Eh, I’ve uncovered a pandora’s box. My world will never be the same.

Though the conclusion is simple: we must never use finalizers except of situations when our app is completely independent of when they may be executed and if they may be executed. Crap-crap-crap.

0reactions

GedMarccommented, Oct 11, 2018

that is a good read

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