Bugs item #1013153, was opened at 2004-08-20 21:58
Message generated for change (Comment added) made by lmoore
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Category: JBossCache
Group: v3.2
Status: Closed
Resolution: Duplicate
Priority: 5
Submitted By: lantz moore (lmoore)
Assigned to: Ben Wang (bwang00)
Summary: infinite loop in LRUAlgorithm.prune
Initial Comment:
i noticed that after certain operations,
LRUAlgorithm.prune seemed to go into an infinite loop.
taking a look with a debugger, i saw that a NodeEntry
was pointing to itself.
the problem was in the following code from removeFromQueue:
ne.getPrevious().setNext(ne.getPrevious());
ne.getNext().setPrevious(ne.getNext());
which makes ne.getPrevious() point to itself with it's
next link.
i've included a patch that seems to fix the issue.
note: the same backward linking logic is used in the
commented out code in the promote method.
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>Comment By: lantz moore (lmoore)
Date: 2004-08-27 16:54
Message:
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this does not appear to be fixed on the 3.2 branch:
in version 1.8.2.3, the following code still exists in
LRUAlgorithm.removeFromQueue:
ne.getPrevious().setNext(ne.getPrevious());
ne.getNext().setPrevious(ne.getNext());
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Comment By: Ben Wang (bwang00)
Date: 2004-08-24 07:42
Message:
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I have fixed this issue since JBossCache1.02 of which I have
just ported to 3.2 about 2 weeks ago. So please double
check it again.
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