Understanding Document ID (Lucene 10.0.0)

I'm new to Lucene and trying to understand the concept of unique document id, something like a primary key in databases like sql or sqlite etc. While searching, I came across this article: https://blog.mikemccandless.com/2014/05/choosing-which actually fast-unique-identifier-uuid.html

lucene build failure on Windows using pylucene 9.7.0

Hello, OS : Windows 10 PyLucene : 9.7.0 JDK : 23.0 Although I can download the binary distribution of version 9.7.0, I have decided to build it from scratch as I am new to javascript and lucene. It will help me learn. 1. downloading and extracting pylucene 2. cd lucene-java-9.7.0 3. gradlew.bat