[GitHub] [lucene] uschindler commented on pull request #12306: Make MAX_DIMENSIONS configurable via a system property.

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

uschindler commented on PR #12306:
URL: https://github.com/apache/lucene/pull/12306#issuecomment-1552692627

   > The only argument you've given against a system property specifically is:
   > 
   > > system property is not used appropriately (e.g. proper security checks). If there is a security manager, and it doesn't allow read to this property, classes will fail to load.
   > 
   > Okay, good point. I can improve the PR to catch a SecurityException and use the default value; maybe log a warning as well.
   
   Please take the code of MmapDirectory. There it reads a sysprop. The code there is the "most modern" variant to read it. Also wrap it with AccessController.doPrivileged! It is not easy visible in MmapDirectory, because the whole code block is wrapped by AccessController.


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