From cf83bbd98a8c824e85f1dede80c4d689be8f9303 Mon Sep 17 00:00:00 2001
From: alesapin <alesapin@gmail.com>
Date: Mon, 22 Mar 2021 16:51:44 +0300
Subject: [PATCH] Add crashing test

---
 ...psing_merge_adaptive_granularity.reference |  2 +
 ..._collapsing_merge_adaptive_granularity.sql | 53 +++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.reference
 create mode 100644 tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.sql

diff --git a/tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.reference b/tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.reference
new file mode 100644
index 00000000000..30dcbd3b98e
--- /dev/null
+++ b/tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.reference
@@ -0,0 +1,2 @@
+-8191	8193
+-8191	8191
diff --git a/tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.sql b/tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.sql
new file mode 100644
index 00000000000..bbc56ec9bb1
--- /dev/null
+++ b/tests/queries/0_stateless/01764_collapsing_merge_adaptive_granularity.sql
@@ -0,0 +1,53 @@
+DROP TABLE IF EXISTS collapsing_table;
+SET optimize_on_insert = 0;
+
+CREATE TABLE collapsing_table
+(
+    key UInt64,
+    value UInt64,
+    Sign Int8
+)
+ENGINE = CollapsingMergeTree(Sign)
+ORDER BY key
+SETTINGS
+    vertical_merge_algorithm_min_rows_to_activate=0,
+    vertical_merge_algorithm_min_columns_to_activate=0,
+    min_bytes_for_wide_part = 0;
+
+INSERT INTO collapsing_table SELECT if(number == 8192, 8191, number), 1, if(number == 8192, +1, -1) FROM numbers(8193);
+
+SELECT sum(Sign), count() from collapsing_table;
+
+OPTIMIZE TABLE collapsing_table FINAL;
+
+SELECT sum(Sign), count() from collapsing_table;
+
+DROP TABLE IF EXISTS collapsing_table;
+
+
+DROP TABLE IF EXISTS collapsing_suspicious_granularity;
+
+CREATE TABLE collapsing_suspicious_granularity
+(
+    key UInt64,
+    value UInt64,
+    Sign Int8
+)
+ENGINE = CollapsingMergeTree(Sign)
+ORDER BY key
+SETTINGS
+    vertical_merge_algorithm_min_rows_to_activate=0,
+    vertical_merge_algorithm_min_columns_to_activate=0,
+    min_bytes_for_wide_part = 0
+    index_granularity = 1;
+
+INSERT INTO collapsing_suspicious_granularity VALUES (1, 1, -1) (1, 1, 1);
+
+SELECT sum(Sign), count() from collapsing_suspicious_granularity;
+
+OPTIMIZE TABLE collapsing_suspicious_granularity FINAL;
+
+SELECT sum(Sign), count() from collapsing_suspicious_granularity;
+
+
+DROP TABLE IF EXISTS collapsing_suspicious_granularity;