As said, it is true that scoring scripts (like the function score scripts o the AbstractSearchScript) need to reside on data nodes. Accessing fields is a low level operation in a script so it is not possible to install such a boost plugin that uses scripting on a data-less node. You would have to install it on all the data nodes which might become tedious (but it is doable).
Another issue is that you use scripting in a java plugin. I conclude from this, the search should work later over the HTTP API by executing a standard function score query with the boost script name (is that true?) Writing a plugin, in a pure java environment, you have much more degrees of freedom to supersede the script functionality and use other code paths. For example, you could reuse the resource watch service from ES (used for watching script file changes) to reload the boost info (which is in your binary files I assume). Then you could build the query internally using the Java API as a custom score query action and execute it from your favorite (data-less) node (or from two nodes, for better fault tolerance / load balancing). Optionally, you could expose a new endpoint to the ES REST API, for example "_search_with_boost", which works like "_search", but makes use of the boost info files. For a more generic solution, it would be convenient to convert the boost info into a JSON parameter file so this could be loaded by the standard ES settings/config routines and by other languages, also for better reuse by others in the ES community :) An example plugin name could be "boost control plugin"... Jörg On Wed, Jun 4, 2014 at 8:15 PM, virgil <virgil...@gmail.com> wrote: > Yeah, but I would consider the nondata node is already doing the job. -- > "These "non data" nodes are still part of the cluster, and they redirect > operations exactly to the node that holds the relevant data. The other > benefit is the fact that for scatter / gather based operations (such as > search), these nodes will take part of the processing since they will start > the scatter process, and perform the actual gather processing." I just > uploaded my native script code in https://github.com/virgil0/TestPlugin. > It > works with the function score query. You can see that there are 3 bin file > I > need to load into memory. Thank you for reply. > > > > -- > View this message in context: > http://elasticsearch-users.115913.n3.nabble.com/ANN-Elasticsearch-Simple-Action-Plugin-tp4056971p4057054.html > Sent from the ElasticSearch Users mailing list archive at Nabble.com. > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elasticsearch+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/1401905723480-4057054.post%40n3.nabble.com > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoGBMEEc6oC1%3DBX7gS41se13BExO_iKJtiGC6zrhmxJqxA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
