From d83b27d22197e67b7be8adab4a6c2e5be28ab70c Mon Sep 17 00:00:00 2001
From: Fabrizio Grosa <fabrizio.grosa@cern.ch>
Date: Thu, 15 Feb 2024 17:12:26 +0100
Subject: [PATCH] Framework: add condition in AOD merger to handle empty DFs in
 linked derived data

---
 Framework/AODMerger/src/aodMerger.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Framework/AODMerger/src/aodMerger.cxx b/Framework/AODMerger/src/aodMerger.cxx
index 363350882caaa..0b98d6f740c15 100644
--- a/Framework/AODMerger/src/aodMerger.cxx
+++ b/Framework/AODMerger/src/aodMerger.cxx
@@ -388,7 +388,7 @@ int main(int argc, char* argv[])
         }
       }
 
-      if (currentDirSize > maxDirSize) {
+      if (maxDirSize == 0 || currentDirSize > maxDirSize) {
         if (verbosity > 0) {
           printf("Maximum size reached: %ld. Closing folder %s.\n", currentDirSize, dfName);
         }