dsmiley commented on PR #2835:
URL: https://github.com/apache/solr/pull/2835#issuecomment-2490177006

   Hadoop Auth and Kerberos aren't the same.  
[Kerberos](https://en.wikipedia.org/wiki/Kerberos_(protocol)) is an 
authentication protocol, 
[Hadoop-Auth](https://hadoop.apache.org/docs/current/hadoop-auth/index.html) is 
framework that implements Kerberos and more.  Hadoop-Auth seems to power 
several options, LDAP is another (I'm learning this now with some basic Google 
searches).  @risdenk [wrote about 
it](https://risdenk.github.io/2018/11/20/apache-solr-hadoop-authentication-plugin-ldap.html)
 in 2018.
   
   The underlying point is we should communicate the effective impact to users 
in terms they might understand.  They might not know about the specific 
libraries that implement the functionality that are going away.  Granted, a 
user using such stuff likely knows they are using this module since they had to 
opt-in to get the functionality (as of Solr 9 but not prior) but it may be an 
overlooked detail nonetheless.
   


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