From eab24bd288d63aea1d7e2f407c703a8b9f322d62 Mon Sep 17 00:00:00 2001
From: jgrusewski <jgrusewski@localhost>
Date: Wed, 25 Mar 2026 08:37:59 +0100
Subject: [PATCH] =?UTF-8?q?fix:=20stop=20clearing=20feature=20cache=20on?=
 =?UTF-8?q?=20every=20Argo=20run=20=E2=80=94=20auto-invalidates=20via=20co?=
 =?UTF-8?q?ntent=20hash?=
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---
 infra/k8s/argo/compile-and-train-template.yaml | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/infra/k8s/argo/compile-and-train-template.yaml b/infra/k8s/argo/compile-and-train-template.yaml
index 36a319906..481b9f3be 100644
--- a/infra/k8s/argo/compile-and-train-template.yaml
+++ b/infra/k8s/argo/compile-and-train-template.yaml
@@ -393,11 +393,10 @@ spec:
             mkdir -p /workspace/output/hyperopt
 
             # Invalidate stale feature cache — the cache key now includes
-            # MBP-10 + trades dirs, so old caches (without trades/VPIN)
-            # won't match. But clean up the orphaned files to reclaim space.
-            echo "=== Clearing stale feature cache ==="
-            rm -f /workspace/.foxhunt_feature_cache/*.bin 2>/dev/null
-            echo "  Done (fresh features will be computed with VPIN enrichment)"
+            # Feature cache persists across runs — keyed by data file hashes,
+            # auto-invalidates when data changes. Do NOT clear it.
+            echo "=== Feature cache preserved (auto-invalidation via content hash) ==="
+            ls -lh /workspace/.foxhunt_feature_cache/*.bin 2>/dev/null || echo "  (empty — will be built on first run)"
 
             MODEL="{{workflow.parameters.model}}"
             case "$MODEL" in