[jira] [Assigned] (COUCHDB-2431) Improve debugging and error messages of query server communication

["Alexander Shorin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COUCHDB-2431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexander Shorin reassigned COUCHDB-2431:
-----------------------------------------

    Assignee: Alexander Shorin

> Improve debugging and error messages of query server communication
> ------------------------------------------------------------------
>
>                 Key: COUCHDB-2431
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-2431
>             Project: CouchDB
>          Issue Type: Improvement
>      Security Level: public(Regular issues) 
>            Reporter: Martin Monperrus
>            Assignee: Alexander Shorin
>
> I end an intense debugging session of Couchdb. The problem lied in the query server.
> The difficulty of debugging the query server communication comes from the fact that the Couchdb log always contains the same error: "os_process_error, OS process timed out." regardless of the actual error. 
> The same error message is used for very different errors:
> - query server executable not found
> - query server executable not executable (wrong permissions)
> - query server crashes at startup
> - query server hangs
> - query server replies garbage
> - query invalid
> - query execution too long



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