How to merge ROOT files larger than 100 GB

[etejedor]

Hello,

I think this answer by @pcanal can be useful:

Root 6.04.14 hadd 100Gb and rootlogon

Dear experts, I am currently trying to use hadd to make an output file with a tree with size > 100 Gb. I read: https://root-forum.cern.ch/t/root-6-04-14-hadd-100gb-tfilemerger-recursiveremove/24117/4 and: It seems that in my case the easiest solution is to create in the directory I execute “hadd” a rootlogon.C file with: { TTree::SetMaxTreeSize( 1000000000000LL ); // 1 TB } However, it seems that when I run “hadd” this new option is not taken into account. I tried two commands: h…

Cheers,
Enric