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https://issues.apache.org/jira/browse/JCS-153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15026716#comment-15026716
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Thomas Vandahl commented on JCS-153:
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I think I found the problem. You forgot to subtract the size of existing
elements from the contentSize on put() and processRemovedLRU(). See my
modifications in SVN.
> Size based BlockDiskCache data corruption
> ------------------------------------------
>
> Key: JCS-153
> URL: https://issues.apache.org/jira/browse/JCS-153
> Project: Commons JCS
> Issue Type: Bug
> Components: Composite Cache
> Affects Versions: jcs-2.0-beta-1
> Environment: Windows 7, Java 8
> Reporter: Wiktor N
> Attachments: size-tests.patch
>
>
> As a follow-up to JCS-147 - I've encountered some problems when using
> BlockDiskCache and size limitation that sometimes content is dropped due to
> failed integrity check. It's not reproducible every time, but I've managed to
> create the JUnit test that fails every time just by using simple loop.
> From attached patch, testLoadFromDisk fails on my system every time. I've
> tried to debug this, but I've run out of ideas, where to look for the problem.
> Attached patch contains also some restructure of the tests:
> BlockDiskCacheUnitTest renamed to BlockDiskCacheUnitTestAbstract
> IndexDiskCacheUnitTest renamed to IndexDiskCacheUnitTestAbstract
> IndexDiskCacheUnitTestCount ->IndexDiskCacheCountUnitTest
> IndexDiskCacheUnitTestSize -> IndexDiskCacheSizeUnitTest
> BlockDiskCacheUnitTestCount -> BlockDiskCacheCountUnitTest
> BlockDiskCacheUnitTestSize -> BlockDiskCacheSizeUnitTest
> To better align with current patterns looking for tests.
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