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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2654) <lockType/> not used consistently in all places Directory objects are instantiated
Date Thu, 04 Aug 2011 17:18:28 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13079477#comment-13079477
] 

Mark Miller commented on SOLR-2654:
-----------------------------------

So the lock issue is not really a problem - but not sharing the dir is depending on the impl
as I mentioned.

I first tried tackling this outside of the directory factory - this quickly gets very difficult,
most due to the newIndexPath that replication uses to avoid copying a full index.

I'm now exploring simply have the base directory factory cache all directories with the path
as a key - how the ram directory factory works now.

> <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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