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https://issues.apache.org/jira/browse/SOLR-2368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12995587#comment-12995587
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Jan Høydahl commented on SOLR-2368:
-----------------------------------
I agree with David's comments on SOLR-1553 that edismax is already good enough
to replace dismax already, as it is clearly better, more useful and also
backward compatible. It may still need some tuning, but not replacing dismax
now in 3.1 could be an example of "perfect being the enemy of good" :)
In Cominvent, we've been using edismax as the main query parser on all customer
projects for several months now, and it is clearly much better than the old
dismax, which is not robust enough nor does it allow the syntaxes which people
have come to expect.
We have not seen any bugs or instabilities on either of these sites where it is
live: www.dn.no, www.libris.no,
http://www.rechargenews.com/search?q=oil+AND+(usa+OR+eu) and many more.
May I suggest the following for 3.1:
* defType=dismax is changed to point to Extended DisMax
* defType=basicdismax is pointed to the old Basic DisMax (to give people a way
to revert if needed)
* defType=edismax is dropped (or added as a temporary alias to dismax)
* The wiki page http://wiki.apache.org/solr/DisMaxQParserPlugin is edited to
reflect the changes, and specific parameters or features which are likely to be
changed in future are marked as "experimental, may change" to warn people.
> Improve extended dismax (edismax) parser
> ----------------------------------------
>
> Key: SOLR-2368
> URL: https://issues.apache.org/jira/browse/SOLR-2368
> Project: Solr
> Issue Type: Improvement
> Reporter: Yonik Seeley
>
> Improve edismax and replace dismax once it has all of the needed features.
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