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https://issues.apache.org/jira/browse/LUCENE-5228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13882266#comment-13882266
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Littlestar edited comment on LUCENE-5228 at 1/26/14 10:54 AM:
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not fixed in 4.6.1? Thanks.
>>>I see stuff like: "merge problem with lucene 3 and 4 indices" (from solr
>>>users list), and cannot even think how to respond to these users because so
>>>many things can go wrong with IndexWriter.addIndexes(Directory)
may related to LUCENE-5377
was (Author: cnstar9988):
not fixed in 4.6.1? Thanks.
>>>I see stuff like: "merge problem with lucene 3 and 4 indices" (from solr
>>>users list), and cannot even think how to respond to these users because so
>>>many things can go wrong with IndexWriter.addIndexes(Directory)
may related to https://issues.apache.org/jira/browse/LUCENE-5377
> IndexWriter.addIndexes copies raw files but acquires no locks
> -------------------------------------------------------------
>
> Key: LUCENE-5228
> URL: https://issues.apache.org/jira/browse/LUCENE-5228
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
> Assignee: Michael McCandless
> Fix For: 5.0, 4.7
>
> Attachments: LUCENE-5228.patch
>
>
> I see stuff like: "merge problem with lucene 3 and 4 indices" (from solr
> users list), and cannot even think how to respond to these users because so
> many things can go wrong with IndexWriter.addIndexes(Directory)
> it currently has in its javadocs:
> NOTE: the index in each Directory must not be changed (opened by a writer)
> while this method is running. This method does not acquire a write lock in
> each input Directory, so it is up to the caller to enforce this.
> This method should be acquiring locks: its copying *RAW FILES*. Otherwise we
> should remove it. If someone doesnt like that, or is mad because its 10ns
> slower, they can use NoLockFactory.
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