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From "Shalin Shekhar Mangar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-11250) Add new LTR model which loads the model definition from the external resource
Date Thu, 31 Aug 2017 06:02:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-11250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16148497#comment-16148497
] 

Shalin Shekhar Mangar commented on SOLR-11250:
----------------------------------------------

You are right that SolrResourceLoader cannot load resources from other protocols such as http
or ftp. If you do not want to write separate code for using SolrResourceLoader and your custom
implementation, you should whitelist the paths to within the instance directory and only allow
unsafe paths if the unsafe system property is turned on. See {{SolrResourceLoader.checkPathIsSafe}}
method.

> Add new LTR model which loads the model definition from the external resource
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-11250
>                 URL: https://issues.apache.org/jira/browse/SOLR-11250
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: contrib - LTR
>            Reporter: Yuki Yano
>            Priority: Minor
>         Attachments: SOLR-11250_master.patch, SOLR-11250_master_v2.patch, SOLR-11250_master_v3.patch,
SOLR-11250.patch
>
>
> We add new model which contains only the location of the external model and loads it
during the initialization.
> By this procedure, large models which are difficult to upload to ZooKeeper can be available.
> The new model works as the wrapper of existing models, and deligates APIs to them.
> We add two classes by this patch:
> * {{ExternalModel}} : a base class for models with external resources.
> * {{URIExternalModel}} : an implementation of {{ExternalModel}} which loads the external
model from specified URI (ex. file:, http:, etc.).
> For example, if you have a model on the local disk "file:///var/models/myModel.json",
the definition of {{URIExternalModel}} will be like the following.
> {code}
> {
>   "class" : "org.apache.solr.ltr.model.URIExternalModel",
>   "name" : "myURIExternalModel",
>   "features" : [],
>   "params" : {
>     "uri" : "file:///var/models/myModel.json"
>   }
> }
> {code}
> If you use LTR with {{model=myURIExternalModel}}, the model of {{myModel.json}} will
be used for scoring documents.



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