[jira] [Updated] (SOLR-6892) Make it possible to define update request processors as toplevel components

["Noble Paul (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-6892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Noble Paul updated SOLR-6892:
-----------------------------
    Summary: Make it possible to define update request processors as toplevel components   (was: Make update processors toplevel components )

> Make it possible to define update request processors as toplevel components 
> ----------------------------------------------------------------------------
>
>                 Key: SOLR-6892
>                 URL: https://issues.apache.org/jira/browse/SOLR-6892
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Noble Paul
>            Assignee: Noble Paul
>
> The current update processor chain is rather cumbersome and we should be able to use the updateprocessors without a chain.
> The scope of this ticket is 
> * A new tag <updateProcessor>  becomes a toplevel tag and it will be equivalent to the {{<processor>}} tag inside {{<updateRequestProcessorChain>}} . The only difference is that it should require a {{name}} attribute. The {{<updateProcessorChain>}} tag will continue to exist and it should be possible to define <processor> inside as well . It should also be possible to reference a named URP in a chain.
> * Any update request will be able  to pass a param {{processor=a,b,c}} , where a,b,c are names of update processors. A just in time chain will be created with those URPs
> * Some in built update processors (wherever possible) will be predefined with standard names and can be directly used in requests 
> * What happens when I say processor=a,b,c in a request? It will execute the default chain after the just-in-time chain {{a->b->c}} . 
> * How to execute a different chain other than the default chain? the same old mechanism of update.chain=x means that the chain  {{x}} will be applied after {{a,b,c}}
> * How to avoid the default processor chain from being executed ? There will be an implicit URP called {{STOP}} . send your request as processor=a,b,c,STOP. 



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