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https://issues.apache.org/jira/browse/SOLR-124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12481264
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Mike Klaas commented on SOLR-124:
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DUH may be simpler, but DUH2 has also been carefully modified to safely support
multithreaded indexing and autocommitting.
Does anyone have a feeling on whether LUCENE-565 will improve performance? Or
is it likely to be mostly a code cleansliness improvement?
> use NewIndexModifier, LUCENE-565
> --------------------------------
>
> Key: SOLR-124
> URL: https://issues.apache.org/jira/browse/SOLR-124
> Project: Solr
> Issue Type: Improvement
> Components: update
> Reporter: Yonik Seeley
>
> LUCENE-565 adds extension points to the IndexWriter, and adds delete-by-term
> functionality.
> We should probably take advantage of this (when available) in our
> UpdateHandler (a new one, or modify DU2?)
> and perhaps implement a more efficient deleteByQuery.
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