Inefficient indexOf called inside of CopyOnWriteArrayList$COWSubList.remove(Object)

Martin Buchholz martinrb at
Mon Mar 26 18:58:47 UTC 2018

I filed
and added comment:

I agree that CopyOnWriteArrayList subList code can be improved.
We should stop subclassing AbstractList.
We should add more tests.
We should have more guidance about when to use index-based API - only when
quiescent or thread-confined. Explain how to most efficiently create a
snapshot - probably
 snapshot = new CopyOnWriteArrayList(sharedCOWAL)

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