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https://issues.apache.org/jira/browse/SOLR-2193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13041427#comment-13041427
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Mark Miller commented on SOLR-2193:
-----------------------------------
Hey man - I can only do what I can do. Let god sort it out. I'm ready to be
judged. I didn't do it all perfect. I didn't make all the right choices. But
overall I'd say I was way more good than bad. I may have been a little
sociopathic during that one short stint in my teens, but other than that, its
worked out well I think.
> Re-architect Update Handler
> ---------------------------
>
> Key: SOLR-2193
> URL: https://issues.apache.org/jira/browse/SOLR-2193
> Project: Solr
> Issue Type: Improvement
> Reporter: Mark Miller
> Assignee: Mark Miller
> Fix For: 4.0
>
> Attachments: SOLR-2193.patch, SOLR-2193.patch, SOLR-2193.patch,
> SOLR-2193.patch, SOLR-2193.patch
>
>
> The update handler needs an overhaul.
> A few goals I think we might want to look at:
> 1. Cleanup - drop DirectUpdateHandler(2) line - move to something like
> UpdateHandler, DefaultUpdateHandler
> 2. Expose the SolrIndexWriter in the api or add the proper abstractions to
> get done what we now do with special casing:
> if (directupdatehandler2)
> success
> else
> failish
> 3. Stop closing the IndexWriter and start using commit (still lazy IW init
> though).
> 4. Drop iwAccess, iwCommit locks and sync mostly at the Lucene level.
> 5. Keep NRT support in mind.
> 6. Keep microsharding in mind (maintain logical index as multiple physical
> indexes)
> 7. Address the current issues we face because multiple original/'reloaded'
> cores can have a different IndexWriter on the same index.
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