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From "Simon Willnauer (JIRA)" <>
Subject [jira] [Created] (SOLR-2565) Prevent IW#close and cut over to IW#commit
Date Wed, 01 Jun 2011 07:33:47 GMT
Prevent IW#close and cut over to IW#commit

                 Key: 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

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

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