Warning in <TChain::CopyAddresses>: Could not find branch named

[Kevin1]

Hi,

In my case the warnings are there even without using IMT.

The input files are the same as in

RDataFrame entry loss when using multi-thread in version 6.18.00

Dear experts, Recently I’m moving to the new version 6.18.00 and noticed something strange that didn’t exist in 6.16.00. ROOT::EnableImplicitMT(); ROOT::RDataFrame df{"NOMINAL", "./merge/3.root"}; df.Snapshot("t", "./test.root", {"jet_pt"}); The number of entries in the new test.root file is different from that in the original 3.root file. This only happens in the version 6.18.00 (not in 6.16.00) when the Implicit MT is turned on, and not for all the files. Actually this file dependence seems…

Unfortunately I’m afraid that I can’t make them public… I’m sorry. Do you mind me sharing it with you privately on cernbox? Thanks!

Best,
Kevin