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https://issues.apache.org/jira/browse/LUCENE-7843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rei Shapira updated LUCENE-7843:
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Summary: DirectoryReader.listCommits graceful handling of corrupt commits
is broken (was: DirectoryReader.listCommits graceful handling of corrupt
segments is broken)
> DirectoryReader.listCommits graceful handling of corrupt commits is broken
> --------------------------------------------------------------------------
>
> Key: LUCENE-7843
> URL: https://issues.apache.org/jira/browse/LUCENE-7843
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 6.5.1
> Environment: Windows, MMapDirectory
> Reporter: Rei Shapira
>
> DirectoryReader.listCommits expects FileNotFoundException and
> NoSuchFileException while trying to read a specific commit file - if these
> are thrown then that specific commit file is not returned in the list of all
> commits for that directory.
> LUCENE-7662 changed the behavior of SegmentInfos.readCommit to not throw
> these exceptions anymore, but rather CorruptIndexException.
> This causes the code in DirectoryReader.listCommits to never encounter the
> previous two exception types, thus throwing the CorruptIndexException all the
> way to the top, instead of gracefully handling a few missing commit files.
> This breaks how Luke does a clean index operation when listing all of the
> commits and then proceeding to delete any files inside the index directory
> that were not mentioned by any of the commits.
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