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Posted to dev@lucene.apache.org by "Rei Shapira (JIRA)" <ji...@apache.org> on 2017/05/22 18:04:04 UTC
[jira] [Updated] (LUCENE-7843) DirectoryReader.listCommits graceful
handling of corrupt segments is broken
[ https://issues.apache.org/jira/browse/LUCENE-7843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rei Shapira updated LUCENE-7843:
--------------------------------
Summary: DirectoryReader.listCommits graceful handling of corrupt segments is broken (was: DirectoryReader.listCommits handling of corrupt segments has broken)
> DirectoryReader.listCommits graceful handling of corrupt segments 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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