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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3424) PhoneticFilterFactory threadsafety bug
Date Sat, 05 May 2012 21:29:50 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269064#comment-13269064
] 

Uwe Schindler commented on SOLR-3424:
-------------------------------------

Hi David,
just commit it, I am about to leave for business trips (including Lucene Rev) so have not
much time.
Uwe
                
> PhoneticFilterFactory threadsafety bug
> --------------------------------------
>
>                 Key: SOLR-3424
>                 URL: https://issues.apache.org/jira/browse/SOLR-3424
>             Project: Solr
>          Issue Type: Bug
>          Components: Schema and Analysis
>    Affects Versions: 3.6, 4.0
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: SOLR-3424_PhoneticFilterFactory_threadsafety_bug.patch, SOLR-3424_PhoneticFilterFactory_threadsafety_bug.patch,
SOLR-3424_PhoneticFilterFactory_threadsafety_bug.patch, SOLR-3424_PhoneticFilterFactory_threadsafety_bug.patch,
SOLR-3424_PhoneticFilterFactory_threadsafety_bug.patch, SOLR-3424_PhoneticFilterFactory_threadsafety_bug.patch
>
>
> PhoneticFilterFactory has a static HashMap registry mapping an encoder name to an implementation.
There is a ReentrantLock used when the map is modified (when the encoder config specifies
a class name).  However, this map, which can be accessed by multiple indexing threads, isn't
guarded on any of the reads, which isn't just the common path but also the error messages
which dump the registry into the error message.
> I realize the likelihood of a problem is extremely slim, but a bug's a bug.

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