Intellij maven indices folder size is huge

Yes, you can remove it, but artifact search and other Maven related features will not work until the new index is built for the repositories.

Related request: https://youtrack.jetbrains.com/issue/IDEA-134454.

Thanks Serge, so I can just run "rm  <userdir>\.IdeaIC2016.3\system\Maven\Indices\"? BTW, how can I trigger regenerate if I find I need the missing features?

Yes, you can trigger it using the Update button in the repositories dialog: https://www.jetbrains.com/help/idea/2016.3/maven-repositories.html.

Thanks a lot, it helped

I was stupid enough to launch Maven indices update. And now I am deprived of a few GB of disk space.

system\Maven\Indices is not that large though, just 14 MB

So where did all the disk space go? I checked various locations including Temp but couldn't find the culprit.

Found it!

C:\Users\xxx\AppData\Local\Temp\nexus-maven-repository-index.gz7520594815105500293 - 6.5 GB

Is there any way to limit the indices update to local Maven repo only?

E.g. I already have slf4j-log4j12 in my local Maven repo. And would like to be able to add this dependency to a project via Alt+Ins. But currently that would require sacrificing several gigabytes for the whole Maven central repo index. :-(

 See IDEA-193323 and IDEA-193324

If IDE did finish indices update the files is saved in the mentioned directory. If process was interrupted I'd indeed checked the system temp directory (the java.io.tmpdir property). 

If it is not it, then it must be something else that utilizes the space. Check e.g. all IDE system(caches) directory.

Thanks for the information and your requests.