From be1e8d3b5fe17d0c0f66ba07bc28749cae5ae0da Mon Sep 17 00:00:00 2001
From: Lukas Beiske <lukas.beiske@tu-dortmund.de>
Date: Thu, 26 Oct 2023 16:14:49 +0200
Subject: [PATCH] Add changelog

---
 docs/changes/2423.optimization.rst | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 docs/changes/2423.optimization.rst

diff --git a/docs/changes/2423.optimization.rst b/docs/changes/2423.optimization.rst
new file mode 100644
index 00000000000..b6e1567767a
--- /dev/null
+++ b/docs/changes/2423.optimization.rst
@@ -0,0 +1,3 @@
+Load data and apply event and column selection in chunks in ``ctapipe-train-*``
+before merging afterwards.
+This reduces memory usage.