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From "David Smiley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3424) PhoneticFilterFactory threadsafety bug
Date Fri, 04 May 2012 02:46:48 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13268053#comment-13268053
] 

David Smiley commented on SOLR-3424:
------------------------------------

Looks good Uwe.
One minor nit is that the URL in the class Javadoc to Commons-Codec's Language package should
be this URL:
http://commons.apache.org/codec/apidocs/org/apache/commons/codec/language/package-summary.html
  which is the one to 1.6; the existing link is older with fewer classes.  We've got this
link in both the FilterFactory & Filter.

Feel free to commit if you want or just leave it to me.
                
> 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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