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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2565) Prevent IW#close and cut over to IW#commit
Date Wed, 01 Jun 2011 08:55:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13042048#comment-13042048
] 

Robert Muir commented on SOLR-2565:
-----------------------------------

I merged the initial commit from SOLR-2279 (which enables MockDirectoryWrapper for solr tests/tracking
file handles)... no issues found from the branch.

I'm gonna look now at some other general ways we can beef up the test coverage in Solr, especially
by reusing what we have done in Lucene.


> Prevent IW#close and cut over to IW#commit
> ------------------------------------------
>
>                 Key: SOLR-2565
>                 URL: https://issues.apache.org/jira/browse/SOLR-2565
>             Project: Solr
>          Issue Type: Improvement
>          Components: update
>    Affects Versions: 4.0
>            Reporter: Simon Willnauer
>             Fix For: 4.0
>
>
> Spinnoff from SOLR-2193. We already have a branch to work on this issue here https://svn.apache.org/repos/asf/lucene/dev/branches/solr2193

> The main goal here is to prevent solr from closing the IW and use IW#commit instead.
AFAIK the main issues here are:
> The update handler needs an overhaul.
> A few goals I think we might want to look at:
> 1. Expose the SolrIndexWriter in the api or add the proper abstractions to get done what
we now do with special casing:
> 2. Stop closing the IndexWriter and start using commit (still lazy IW init though).
> 3. Drop iwAccess, iwCommit locks and sync mostly at the Lucene level.
> 4. Address the current issues we face because multiple original/'reloaded' cores can
have a different IndexWriter on the same index.
> Eventually this is a preparation for NRT support in Solr which I will create a followup
issue for.

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