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Merge pull request #12727 from ClickHouse/add-test-for-alter-after-freeze

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Add a test for ALTER after FREEZE
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alexey-milovidov 2020-07-23 23:33:46 +03:00 committed by GitHub
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26
tests/queries/0_stateless/01414_freeze_does_not_prevent_alters.reference Normal file
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1 hello
2 world
all_1_1_0 0
---
all_1_1_0 1
---
1 goodbye
2 world
all_1_1_0 1
all_1_1_0_2 0
---
1 goodbye
2 world
all_1_1_0 1
all_1_1_0_2 0
all_1_1_0_3 0
---
all_1_1_0 1
all_1_1_0_2 0
all_1_1_0_3 1
---
1 hello
2 world
all_1_1_0 1
all_1_1_0_2 0
all_1_1_0_3 1

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tests/queries/0_stateless/01414_freeze_does_not_prevent_alters.sql Normal file
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-- In previous ClickHouse versions, parts were not 100% immutable and FREEZE may prevent subsequent ALTERs.
-- It's not longer the case. Let's prove it.
DROP TABLE IF EXISTS t;
CREATE TABLE t (k UInt64, s String) ENGINE = MergeTree ORDER BY k;
INSERT INTO t VALUES (1, 'hello'), (2, 'world');
SELECT * FROM t;
SELECT name, is_frozen FROM system.parts WHERE database = currentDatabase() AND table = 't';
SELECT '---';
ALTER TABLE t FREEZE;
SELECT name, is_frozen FROM system.parts WHERE database = currentDatabase() AND table = 't';
SELECT '---';
SET mutations_sync = 1;
ALTER TABLE t UPDATE s = 'goodbye' WHERE k = 1;
SELECT * FROM t;
SELECT name, is_frozen FROM system.parts WHERE database = currentDatabase() AND table = 't';
SELECT '---';
ALTER TABLE t MODIFY COLUMN s Enum('goodbye' = 1, 'world' = 2);
SELECT * FROM t;
SELECT name, is_frozen FROM system.parts WHERE database = currentDatabase() AND table = 't';
SELECT '---';
ALTER TABLE t FREEZE;
SELECT name, is_frozen FROM system.parts WHERE database = currentDatabase() AND table = 't';
SELECT '---';
ALTER TABLE t MODIFY COLUMN s Enum('hello' = 1, 'world' = 2);
SELECT * FROM t;
SELECT name, is_frozen FROM system.parts WHERE database = currentDatabase() AND table = 't';
DROP TABLE t;