ClickHouse/tests/queries/0_stateless/01200_mutations_memory_consumption.sql

DROP TABLE IF EXISTS table_with_single_pk;

CREATE TABLE table_with_single_pk
(
  key UInt8,
  value String
)
ENGINE = MergeTree
ORDER BY key;

INSERT INTO table_with_single_pk SELECT number, toString(number % 10) FROM numbers(10000000);

ALTER TABLE table_with_single_pk DELETE WHERE key % 77 = 0 SETTINGS mutations_sync = 1;

SYSTEM FLUSH LOGS;

-- Memory usage for all mutations must be almost constant and less than
-- read_bytes.
SELECT
  DISTINCT read_bytes >= peak_memory_usage
FROM
    system.part_log
WHERE event_type = 'MutatePart' AND table = 'table_with_single_pk' AND database = currentDatabase();

DROP TABLE IF EXISTS table_with_single_pk;

DROP TABLE IF EXISTS table_with_multi_pk;

CREATE TABLE table_with_multi_pk
(
  key1 UInt8,
  key2 UInt32,
  key3 DateTime64(6, 'UTC'),
  value String
)
ENGINE = MergeTree
ORDER BY (key1, key2, key3);

INSERT INTO table_with_multi_pk SELECT number % 32, number, toDateTime('2019-10-01 00:00:00'), toString(number % 10) FROM numbers(10000000);

ALTER TABLE table_with_multi_pk DELETE WHERE key1 % 77 = 0 SETTINGS mutations_sync = 1;

SYSTEM FLUSH LOGS;

-- Memory usage for all mutations must be almost constant and less than
-- read_bytes.
SELECT
  DISTINCT read_bytes >= peak_memory_usage
  FROM
      system.part_log
 WHERE event_type = 'MutatePart' AND table = 'table_with_multi_pk' AND database = currentDatabase();

DROP TABLE IF EXISTS table_with_multi_pk;


DROP TABLE IF EXISTS table_with_function_pk;


CREATE TABLE table_with_function_pk
  (
    key1 UInt8,
    key2 UInt32,
    key3 DateTime64(6, 'UTC'),
    value String
  )
ENGINE = MergeTree
ORDER BY (cast(value as UInt64), key2);

INSERT INTO table_with_function_pk SELECT number % 32, number, toDateTime('2019-10-01 00:00:00'), toString(number % 10) FROM numbers(10000000);

ALTER TABLE table_with_function_pk DELETE WHERE key1 % 77 = 0 SETTINGS mutations_sync = 1;

SYSTEM FLUSH LOGS;

-- Memory usage for all mutations must be almost constant and less than
-- read_bytes.
SELECT
  DISTINCT read_bytes >= peak_memory_usage
  FROM
      system.part_log
 WHERE event_type = 'MutatePart' AND table = 'table_with_function_pk' AND database = currentDatabase();

DROP TABLE IF EXISTS table_with_function_pk;

DROP TABLE IF EXISTS table_without_pk;

CREATE TABLE table_without_pk
(
  key1 UInt8,
  key2 UInt32,
  key3 DateTime64(6, 'UTC'),
  value String
)
ENGINE = MergeTree
ORDER BY tuple();

INSERT INTO table_without_pk SELECT number % 32, number, toDateTime('2019-10-01 00:00:00'), toString(number % 10) FROM numbers(10000000);

ALTER TABLE table_without_pk DELETE WHERE key1 % 77 = 0 SETTINGS mutations_sync = 1;

SYSTEM FLUSH LOGS;

-- Memory usage for all mutations must be almost constant and less than
-- read_bytes.
SELECT
  DISTINCT read_bytes >= peak_memory_usage
  FROM
      system.part_log
 WHERE event_type = 'MutatePart' AND table = 'table_without_pk' AND database = currentDatabase();

DROP TABLE IF EXISTS table_without_pk;