From e32beab913ba29ac92b1d91b31aa9171c980a6e6 Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Fri, 26 Mar 2021 22:08:53 +0300
Subject: [PATCH] Add a test for mmap IO

---
 .../1_stateful/00162_mmap_compression_none.reference      | 1 +
 tests/queries/1_stateful/00162_mmap_compression_none.sql  | 8 ++++++++
 2 files changed, 9 insertions(+)
 create mode 100644 tests/queries/1_stateful/00162_mmap_compression_none.reference
 create mode 100644 tests/queries/1_stateful/00162_mmap_compression_none.sql

diff --git a/tests/queries/1_stateful/00162_mmap_compression_none.reference b/tests/queries/1_stateful/00162_mmap_compression_none.reference
new file mode 100644
index 00000000000..3495cc537c1
--- /dev/null
+++ b/tests/queries/1_stateful/00162_mmap_compression_none.reference
@@ -0,0 +1 @@
+687074654
diff --git a/tests/queries/1_stateful/00162_mmap_compression_none.sql b/tests/queries/1_stateful/00162_mmap_compression_none.sql
new file mode 100644
index 00000000000..2178644214a
--- /dev/null
+++ b/tests/queries/1_stateful/00162_mmap_compression_none.sql
@@ -0,0 +1,8 @@
+DROP TABLE IF EXISTS hits_none;
+CREATE TABLE hits_none (Title String CODEC(NONE)) ENGINE = MergeTree ORDER BY tuple();
+INSERT INTO hits_none SELECT Title FROM test.hits;
+
+SET min_bytes_to_use_mmap_io = 1;
+SELECT sum(length(Title)) FROM hits_none;
+
+DROP TABLE hits_none;