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https://issues.apache.org/jira/browse/SOLR-2654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13072527#comment-13072527
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Mark Miller commented on SOLR-2654:
-----------------------------------
I think practically it's not a large problem - since the write lock is used for
IndexWriter only as you say. Other than that, it would depend on the lock
factory impl. It also depends on the Directory impl. I think in general,
current impls work fine this way.
We should address this I think though - we shouldn't count on this to work
correctly.
It's tricky in a couple areas though. I'll address on trunk before considering
3.4.
> <lockType/> not used consistently in all places Directory objects are
> instantiated
> ----------------------------------------------------------------------------------
>
> Key: SOLR-2654
> URL: https://issues.apache.org/jira/browse/SOLR-2654
> Project: Solr
> Issue Type: Bug
> Reporter: Hoss Man
> Assignee: Mark Miller
> Priority: Critical
> Fix For: 3.4
>
>
> nipunb noted on the mailing list then when configuring solr to use an
> alternate <lockType/> (ie: simple) the stats for the SolrIndexSearcher list
> NativeFSLockFactory being used by the Directory.
> The problem seems to be that SolrIndexConfig is not consulted when
> constructing Directory objects used for IndexReader (it's only used by
> SolrIndexWriter)
> I don't _think_ this is a problem in most cases since the IndexReaders should
> all be readOnly in the core solr code) but plugins could attempt to use them
> in other ways. In general it seems like a really bad bug waiting to happen.
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