Houston Putman created SOLR-14893:
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Summary: Allow UpdateRequestProcessors to add non-error messages
to the response
Key: SOLR-14893
URL: https://issues.apache.org/jira/browse/SOLR-14893
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Components: UpdateRequestProcessors
Reporter: Houston Putman
There are many reasons why a UpdateRequestProcessor would want to send a
response back to the user:
* Informing the user on the results when they use schema-guessing mode
(SOLR-14701)
* Building a new Processor that uses the lucene monitor library to alert on
incoming documents that match saved queries
* The Language detection URPs could respond with the languages selected for
each document.
Currently URPs can be passed in the Response object via the URPFactory that
creates it. However, whenever the URP is placed in the chain after the
DistributedURP, the response that it sends back will be dismissed by the DURP
and not merged and sent back to the user.
The bulk of the logic here would be to add logic in the DURP to accept custom
messages in the responses of the updates it sends, and then merge those into an
overall response to send to the user. Each URP could be responsible for merging
its section of responses, because that will likely contain business logic for
the URP that the DURP is not aware of.
The SolrJ classes would also need updates to give the user an easy way to read
response messages.
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