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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2193) Re-architect Update Handler
Date Tue, 31 May 2011 05:14:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13041427#comment-13041427
] 

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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