From f8c74d8ab44bb204067c8ab55403bb06a45b7920 Mon Sep 17 00:00:00 2001
From: Anton Alkin <anton.alkin@cern.ch>
Date: Tue, 18 Nov 2025 14:17:57 +0100
Subject: [PATCH] DPL Analysis: protect aod-spawner from empty input

---
 Framework/Core/src/AODReaderHelpers.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Framework/Core/src/AODReaderHelpers.cxx b/Framework/Core/src/AODReaderHelpers.cxx
index febc19e02834e..0c556920d3fcb 100644
--- a/Framework/Core/src/AODReaderHelpers.cxx
+++ b/Framework/Core/src/AODReaderHelpers.cxx
@@ -156,6 +156,9 @@ struct Maker {
       originals.push_back(pc.inputs().get<TableConsumer>(label)->asArrowTable());
     }
     auto fullTable = soa::ArrowHelpers::joinTables(std::move(originals), std::span{labels.begin(), labels.size()});
+    if (fullTable->num_rows() == 0) {
+      return arrow::Table::MakeEmpty(schema).ValueOrDie();
+    }
     if (projector == nullptr) {
       auto s = gandiva::Projector::Make(
         fullTable->schema(),