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https://issues.apache.org/jira/browse/SOLR-5654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13879015#comment-13879015
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Steve Rowe commented on SOLR-5654:
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{quote}
Why do we need new factories for synonyms and stopwords? I dont understand this 
design at all, this seems like duplication of all the analysis factories!

Instead, just pass a different resourceloader or something to the existing ones!
{quote}

The point of this issue is to provide REST API methods to interrogate and 
modify/persist synonym config and mappings.  A different resourceloader would 
only allow for this info to be pulled from an alternate persistence store - it 
wouldn't do anything for the REST API and persistence part.

{quote}
But separately I think it's ... dangerous to allow changing stopwords / syns on 
an already created field / running index? Ie, such changes won't fully "take 
effect" until you re-index all content ... I know it's convenient to be able to 
make such changes, but it's also trappy.
{quote}

That's already true today for people who manually modify config and 
restart/reload.  I guess your point is that we shouldn't be making this easier. 
 I disagree: the point of the issue is to allow people more fine-grained 
control over an already-existing freedom.  I think documentation warning people 
about the danger of modifying config with an existing index is sufficient to 
help people who want this capability avoid creating indexes with mixed analysis 
config.


> Create a synonym filter factory that is (re)configurable, and capable of 
> reporting its configuration, via REST API
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-5654
>                 URL: https://issues.apache.org/jira/browse/SOLR-5654
>             Project: Solr
>          Issue Type: Sub-task
>          Components: Schema and Analysis
>            Reporter: Steve Rowe
>
> A synonym filter factory could be (re)configurable via REST API by 
> registering with the RESTManager described in SOLR-5653, and then responding 
> to REST API calls to modify its init params and its synonyms resource file.
> Read-only (GET) REST API calls should also be provided, both for init params 
> and the synonyms resource file.
> It should be possible to add/remove/modify one or more entries in the 
> synonyms resource file.
> We should probably use JSON for the REST request body, as is done in the 
> Schema REST API methods.



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