[jira] [Commented] (SOLR-2565) Prevent IW#close and cut over to IW#commit

["Jason Rutherglen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-2565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13075980#comment-13075980 ] 

Jason Rutherglen commented on SOLR-2565:
----------------------------------------

This issue says committed in the comments, however it's status is: "Unresolved"?

> 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
>            Assignee: Mark Miller
>             Fix For: 4.0
>
>         Attachments: SOLR-2565.patch
>
>
> 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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