[GitHub] [couchdb] big-r81 opened a new issue, #4434: Cannot parse list of tags: `{invalid_flag,<<"partitioned">>}` on Windows

["big-r81 (via GitHub)" <gi...@apache.org>]

big-r81 opened a new issue, #4434:
URL: https://github.com/apache/couchdb/issues/4434

   ## Description
   
   Sometimes the following log messages appears when starting CouchDB for the very first time.
   
   ```
   [error] 2023-02-20T07:09:21.191000Z couchdb@localhost <0.130.0> -------- Cannot parse list of tags: 
   {invalid_flag,<<"partitioned">>}
   ```
   
   ## Steps to Reproduce
   
   No reproducable steps found so far. It's only on the very first run of CouchDB on Windows after install.
   
   * CouchDB version used: 3.3.1
   * Operating system and version: Windows 10 Pro
   


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[GitHub] [couchdb] nickva commented on issue #4434: Cannot parse list of tags: `{invalid_flag,<<"partitioned">>}` on Windows

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

nickva commented on issue #4434:
URL: https://github.com/apache/couchdb/issues/4434#issuecomment-1437341948

   It's probably because of `list_to_existing_atom` in https://github.com/apache/couchdb/blob/a1fc8075f3e86ec2242eedd2b1bbbd15758515e7/src/couch/src/couch_flags_config.erl#L161
   
   There may be a chicken-and-egg problem: we're trying to load the flags before we're loading the first instance or anything creating the partitioned` atom.
   
   We should see if `list_to_existing_atom` actually protects us from unauthorized users creating unreasonable amount of atoms (normally are not allowed unrestricted access to populate .ini config files). Or, we could have to predefined somewhere a list of expected atoms which may appear in flags.


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