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From "Yonik Seeley (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3161) Use of 'qt' should be restricted to searching and should not start with a '/'
Date Tue, 13 Mar 2012 20:16:39 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228657#comment-13228657
] 

Yonik Seeley commented on SOLR-3161:
------------------------------------

As hoss points out, not all searching request handlers inherit from SearchHandler.

bq. Adding what you propose adds more complexity than it's worth, IMO.

The ability to distinguish an update handler from a request handler doesn't sound complex...
the majority of the cases could be handled by adding "implements SolrUpdateHandler" to ContentStreamHandlerBase.

                
> Use of 'qt' should be restricted to searching and should not start with a '/'
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-3161
>                 URL: https://issues.apache.org/jira/browse/SOLR-3161
>             Project: Solr
>          Issue Type: Improvement
>          Components: search, web gui
>            Reporter: David Smiley
>            Assignee: David Smiley
>             Fix For: 3.6, 4.0
>
>         Attachments: SOLR-3161-disable-qt-by-default.patch, SOLR-3161-dispatching-request-handler.patch,
SOLR-3161-dispatching-request-handler.patch
>
>
> I haven't yet looked at the code involved for suggestions here; I'm speaking based on
how I think things should work and not work, based on intuitiveness and security. In general
I feel it is best practice to use '/' leading request handler names and not use "qt", but
I don't hate it enough when used in limited (search-only) circumstances to propose its demise.
But if someone proposes its deprecation that then I am +1 for that.
> Here is my proposal:
> Solr should error if the parameter "qt" is supplied with a leading '/'. (trunk only)
> Solr should only honor "qt" if the target request handler extends solr.SearchHandler.
> The new admin UI should only use 'qt' when it has to. For the query screen, it could
present a little pop-up menu of handlers to choose from, including "/select?qt=mycustom" for
handlers that aren't named with a leading '/'. This choice should be positioned at the top.
> And before I forget, me or someone should investigate if there are any similar security
problems with the shards.qt parameter. Perhaps shards.qt can abide by the same rules outlined
above.
> Does anyone foresee any problems with this proposal?
> On a related subject, I think the notion of a default request handler is bad - the default="true"
thing. Honestly I'm not sure what it does, since I noticed Solr trunk redirects '/solr/' to
the new admin UI at '/solr/#/'. Assuming it doesn't do anything useful anymore, I think it
would be clearer to use <requestHandler name="/select" class="solr.SearchHandler"> instead
of what's there now. The delta is to put the leading '/' on this request handler name, and
remove the "default" attribute.

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