Test proxying of DEL marker for bucket replication (#19870)

Make sure to avoid proxying for DEL markers

Signed-off-by: Shubhendu Ram Tripathi <shubhendu@minio.io>

docs/bucket/replication/test_del_marker_proxying.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+
+# shellcheck disable=SC2120
+exit_1() {
+	cleanup
+
+	for site in sitea siteb; do
+		echo "$site server logs ========="
+		cat "/tmp/${site}_1.log"
+		echo "==========================="
+		cat "/tmp/${site}_2.log"
+	done
+
+	exit 1
+}
+
+cleanup() {
+	echo -n "Cleaning up instances of MinIO ..."
+	pkill -9 minio || sudo pkill -9 minio
+	rm -rf /tmp/sitea
+	rm -rf /tmp/siteb
+	echo "done"
+}
+
+cleanup
+
+export MINIO_CI_CD=1
+export MINIO_BROWSER=off
+export MINIO_ROOT_USER="minio"
+export MINIO_ROOT_PASSWORD="minio123"
+
+# Start MinIO instances
+echo -n "Starting MinIO instances ..."
+minio server --address ":9001" --console-address ":10000" /tmp/sitea/{1...4}/disk{1...4} /tmp/sitea/{5...8}/disk{1...4} >/tmp/sitea_1.log 2>&1 &
+minio server --address ":9002" --console-address ":11000" /tmp/siteb/{1...4}/disk{1...4} /tmp/siteb/{5...8}/disk{1...4} >/tmp/siteb_1.log 2>&1 &
+echo "done"
+
+if [ ! -f ./mc ]; then
+	wget --quiet -O mc https://dl.minio.io/client/mc/release/linux-amd64/mc &&
+		chmod +x mc
+fi
+
+export MC_HOST_sitea=http://minio:minio123@127.0.0.1:9001
+export MC_HOST_siteb=http://minio:minio123@127.0.0.1:9002
+
+./mc ready sitea
+./mc ready siteb
+
+./mc mb sitea/bucket
+./mc version enable sitea/bucket
+./mc mb siteb/bucket
+./mc version enable siteb/bucket
+
+# Set bucket replication
+./mc replicate add sitea/bucket --remote-bucket siteb/bucket
+
+# Run the test to make sure proxying of DEL marker doesn't happen
+loop_count=0
+while true; do
+	if [ $loop_count -eq 100 ]; then
+		break
+	fi
+	echo "Hello World" | ./mc pipe sitea/bucket/obj$loop_count
+	./mc rm sitea/bucket/obj$loop_count
+	RESULT=$({ ./mc stat sitea/bucket/obj$loop_count; } 2>&1)
+	if [[ ${RESULT} != *"Object does not exist"* ]]; then
+		echo "BUG: stat should fail. succeeded."
+		exit_1
+	fi
+	loop_count=$((loop_count + 1))
+done
+
+cleanup