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https://issues.apache.org/jira/browse/SOLR-656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shawn Heisey updated SOLR-656:
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Attachment: SOLR-656-rmdir.patch
Update to alternate patch.
Added abstract isFSBased method to DirectoryFactory and some classes that
extend it. Used this to further guarantee that an empty directory should be
removed.
If custom DF implementations extend DF directly rather than one of the better
base classes, this will break them.
> better error message when "data/index" is completely empty
> ----------------------------------------------------------
>
> Key: SOLR-656
> URL: https://issues.apache.org/jira/browse/SOLR-656
> Project: Solr
> Issue Type: Wish
> Reporter: Hoss Man
> Fix For: 4.2, 5.0
>
> Attachments: SOLR-656.patch, SOLR-656-rmdir.patch,
> SOLR-656-rmdir.patch
>
>
> Solr's normal behavior is to create an "index" dire in the dataDir if one
> does not already exist, but if "index" does exist it is used as is, warts and
> all ... if the index is corrupt in some way, and Solr can't create an
> IndexWriter or IndexReader that error is propagated up to the user.
> I don't think this should change: Solr shouldn't attempt to do anything
> special if there is a low level problem with the index, but something that
> i've seen happen more then a few times is that people unwittingly "rm
> index/*" when they should "run -r index" and as a result Solr+Lucene gives
> them an error instead of just giving them an empty index
> when checking if an existing index dir exists, it would probably be worth
> while to add a little one line sanity test that it contains some files, and
> log a warning.
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