This modification will result in all folder whose name is metrics being ignored.

# for example, a normal metrics package  for spark-engine will be ignored due to this change
externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/spark/kyuubi/metrics/

if we want to ignore $repo_root/metrics created by local IDE, maybe we could change gitignore like this :

# gitignore after
/metrics/

# gitignore before 
metrics/

the metrics created in working dir by default, what will happen if run test in IDEA?

Hi @Z1Wu , i try test in my local with following command:

1. modify class under org.apache.kyuubi.metrics
2. run git status

And output look fine to our expection.

@zwangsheng all changes will be identified if you touch a git-tracked file, I suppose creating a new file under the metrics folder will be ignored, and git add -f <new_file> must be used then

Yes, i tried touch a file under metrics package, seems it has not been tracked. @Z1Wu Thanks for catching this. Would you like to raise a PR to fix this?