From 5deda4c7fd1f6fb6b254fae97cedf66c23a6f759 Mon Sep 17 00:00:00 2001
From: Azat Khuzhin <a3at.mail@gmail.com>
Date: Fri, 5 Jun 2020 01:11:48 +0300
Subject: [PATCH] Add regression test for Pipeline stuck error with INSERT
 SELECT FINAL

---
 .../0_stateless/01296_pipeline_stuck.reference | 13 +++++++++++++
 .../0_stateless/01296_pipeline_stuck.sql       | 18 ++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 tests/queries/0_stateless/01296_pipeline_stuck.reference
 create mode 100644 tests/queries/0_stateless/01296_pipeline_stuck.sql

diff --git a/tests/queries/0_stateless/01296_pipeline_stuck.reference b/tests/queries/0_stateless/01296_pipeline_stuck.reference
new file mode 100644
index 00000000000..ed8de641763
--- /dev/null
+++ b/tests/queries/0_stateless/01296_pipeline_stuck.reference
@@ -0,0 +1,13 @@
+1
+INSERT SELECT
+1
+1
+INSERT SELECT max_threads
+1
+1
+1
+INSERT SELECT max_insert_threads max_threads
+1
+1
+1
+1
diff --git a/tests/queries/0_stateless/01296_pipeline_stuck.sql b/tests/queries/0_stateless/01296_pipeline_stuck.sql
new file mode 100644
index 00000000000..eeb67362634
--- /dev/null
+++ b/tests/queries/0_stateless/01296_pipeline_stuck.sql
@@ -0,0 +1,18 @@
+drop table if exists data_01295;
+create table data_01295 (key Int) Engine=AggregatingMergeTree() order by key;
+
+insert into data_01295 values (1);
+select * from data_01295;
+
+select 'INSERT SELECT';
+insert into data_01295 select * from data_01295; -- no stuck for now
+select * from data_01295;
+
+select 'INSERT SELECT max_threads';
+insert into data_01295 select * from data_01295 final settings max_threads=2; -- stuck with multiple threads
+select * from data_01295;
+
+select 'INSERT SELECT max_insert_threads max_threads';
+set max_insert_threads=2;
+insert into data_01295 select * from data_01295 final settings max_threads=2; -- no stuck for now
+select * from data_01295;