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Posted to notifications@couchdb.apache.org by GitBox <gi...@apache.org> on 2021/05/19 13:25:07 UTC
[GitHub] [couchdb] BrodaUa opened a new issue #3570: No DB shards could be opened - req_err(1577439538)
BrodaUa opened a new issue #3570:
URL: https://github.com/apache/couchdb/issues/3570
## Description
I try to build a messaging app with CouchDB +NodeJS using nano lib. For that I try to create a large number of user-message dbs (up to 10k) and start listening changes feed of each db to track new message and reroute it accordingly.
Currently, when I try to create 10k of dbs and subscribe to the I get *No DB shards could be opened* - please, see attached error log. This issue linked to the ticket in couchdb-nano repo: https://github.com/apache/couchdb-nano/issues/267 . In short, before I had a performance issue that **nano** was picking up last updates very slowly. Following the advice to increase maxSockets of http agent, now I am stuck with *No DB shards could be opened issue*.
## Steps to Reproduce
1. create 10k databases
2. try to subscribe to changes feed
## Expected Behaviour
no errors
## Your Environment
[TIP]: # ( Include as many relevant details about your environment as possible. )
[TIP]: # ( You can paste the output of curl http://YOUR-COUCHDB:5984/ here. )
* CouchDB version used: couchdb:3.1 from https://hub.docker.com/_/couchdb/
* Browser name and version:
* Operating system and version: ubuntu 18.04
## Additional Context
App error message:
```
{"message":" No DB shards could be opened.","level":"error","timestamp":"2021-05-19T12:08:48.160Z","metadata":{"scope":"couch","statusCode":500,"request":{"method":"post","headers":{"content-type":"application/json","accept":"application/json","user-agent":"nano/9.0.3 (Node.js v12.22.1)","Accept-Encoding":"deflate, gzip"},"agent":null,"qsStringifyOptions":{"arrayFormat":"repeat"},"url":"http://XXXXXX:XXXXXX@127.0.0.1:5984/sampleDB/_changes","params":{"feed":"longpoll","timeout":60000,"since":"now","limit":100,"include_docs":true},"data":"{}","maxRedirects":0,"httpAgent":null,"httpsAgent":null},"headers":{"uri":"http://XXXXXX:XXXXXX@127.0.0.1:5984/sampleDB/_changes","statusCode":500,"cache-control":"must-revalidate","connection":"close","content-type":"application/json","date":"Wed, 19 May 2021 12:06:07 GMT","x-couch-request-id":"6165cd9925","x-couch-stack-hash":"1577439538","x-couchdb-body-time":"0"},"errid":"non_200","name":"Error","description":"No DB shards could be opened.","e
rror":"internal_server_error","reason":"No DB shards could be opened.","ref":1577439538,"stack":"Error: No DB shards could be opened.\n at responseHandler (/home/user/project/node_modules/nano/lib/nano.js:175:20)\n at /home/user/project/node_modules/nano/lib/nano.js:405:13\n at runMicrotasks (<anonymous>)\n at processTicksAndRejections (internal/process/task_queues.js:97:5)"}}
```
CouchDB error:
```
[error] 2021-05-19T12:10:00.576437Z nonode@nohost <0.17889.57> 95d02fadcb req_err(1577439538) internal_server_error : No DB shards could be opened.
[<<"fabric_util:get_shard/4 L111">>,<<"fabric_util:get_shard/4 L128">>,<<"fabric_util:get_shard/4 L128">>,<<"fabric:get_security/2 L183">>,<<"chttpd_auth_request:db_authorization_check/1 L110">>,<<"chttpd_auth_request:authorize_request/1 L19">>,<<"chttpd:handle_req_after_auth/2 L321">>,<<"chttpd:process_request/1 L306">>]
```
[TIP]: # ( Add any other context about the problem here. )
linked issue https://github.com/apache/couchdb-nano/issues/267
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[GitHub] [couchdb] wohali closed issue #3570: No DB shards could be opened - req_err(1577439538)
Posted by GitBox <gi...@apache.org>.
wohali closed issue #3570:
URL: https://github.com/apache/couchdb/issues/3570
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