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https://issues.apache.org/jira/browse/LUCENE-3899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Muir resolved LUCENE-3899.
---------------------------------
Resolution: Fixed
> Evil up MockDirectoryWrapper.checkIndexOnClose
> ----------------------------------------------
>
> Key: LUCENE-3899
> URL: https://issues.apache.org/jira/browse/LUCENE-3899
> Project: Lucene - Java
> Issue Type: Test
> Reporter: Robert Muir
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3899.patch
>
>
> MockDirectoryWrapper checks any indexes tests create on close(), if they
> exist.
> The problem is the logic it uses to determine if an index exists could mask
> real bugs (e.g. segments file corrumption):
> {code}
> if (DirectoryReader.indexExists(this) {
> ...
> // evil stuff like crash()
> ...
> _TestUtil.checkIndex(this)
> }
> {code}
> and for reference DirectoryReader.indexExists is:
> {code}
> try {
> new SegmentInfos().read(directory);
> return true;
> } catch (IOException ioe) {
> return false;
> }
> {code}
> So if there are segments file problems, we just silently do no checkIndex.
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