[GitHub] [couchdb] nickva commented on issue #4611: Verification of View Creation Fails

["nickva (via GitHub)" <gi...@apache.org>]

nickva commented on issue #4611:
URL: https://github.com/apache/couchdb/issues/4611#issuecomment-1557329524

   The error indicates the JS engine request is timing out after 5 seconds during document updates. Your database probably has some design documents with [VDUs](https://docs.couchdb.org/en/stable/ddocs/ddocs.html#validate-document-update-functions). 
   
   If you have large documents you could try increasing that timeout:
    ```
   [couchdb] os_process_timeout = 5000
   ```
   Make it 15000 (15 sec), for instance.
   
   If you're doing a lot of  concurrent updates, you may want to increase your JS engine limit to something higher than the default 100:
   ```
   [query_server_config]
   os_process_limit = 100
   ```
   
   Make it 250 and see if it help. 
   
   There is also a good chance that your VDU JS code is crashing or has a loop that's running too long or something like that. Look in the log to see if you notice any stack traces or exceptions.


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