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|
--source include/have_debug.inc
--source include/not_hypergraph.inc # Does not use internal temporary tables yet.
#============
# Temporary table fallback on lack of memory test
#============
# ---------------------------------------------------------------------
# Prepare
#
--echo # Disable sorting by addon fields, as that will enable the
--echo # StreamingIterator in many of the test cases, resulting in
--echo # fewer materializations.
SET debug = '+d,filesort_force_sort_row_ids';
CREATE TABLE t (c VARCHAR(128));
INSERT INTO t VALUES
(REPEAT('a', 128)),
(REPEAT('b', 128)),
(REPEAT('c', 128)),
(REPEAT('d', 128));
ANALYZE TABLE t;
SHOW STATUS LIKE 'Created_tmp_tables';
SHOW STATUS LIKE 'Created_tmp_disk_tables';
--echo # ---------------------------------------------------------------------
--echo # Scenario 1: (ENGINE=MEMORY, LIMIT=default, CASE=basic, RESULT=success)
--echo #
SET @@internal_tmp_mem_storage_engine = MEMORY;
--disable_result_log
SELECT * FROM
t AS t1,
t AS t2,
t AS t3,
t AS t4,
t AS t5,
t AS t6
ORDER BY 1
LIMIT 2;
--enable_result_log
SELECT @@internal_tmp_mem_storage_engine;
SHOW STATUS LIKE 'Created_tmp_tables';
SHOW STATUS LIKE 'Created_tmp_disk_tables';
SET @@internal_tmp_mem_storage_engine = default;
--echo # ---------------------------------------------------------------------
--echo # Scenario 2: (ENGINE=MEMORY, LIMIT=default, CASE=no-std-memory, RESULT=ondisk_fallback)
--echo #
SET @@internal_tmp_mem_storage_engine = MEMORY;
SET @@max_heap_table_size = 16384;
--disable_result_log
SELECT * FROM
t AS t1,
t AS t2,
t AS t3,
t AS t4,
t AS t5,
t AS t6
ORDER BY 1
LIMIT 2;
--enable_result_log
SELECT @@internal_tmp_mem_storage_engine;
SHOW STATUS LIKE 'Created_tmp_tables';
SHOW STATUS LIKE 'Created_tmp_disk_tables';
SET @@internal_tmp_mem_storage_engine = default;
SET @@max_heap_table_size = default;
--echo # ---------------------------------------------------------------------
--echo # Scenario 3: (ENGINE=TempTable, LIMIT=default, CASE=basic, RESULT=success)
--echo #
SET @@internal_tmp_mem_storage_engine = TempTable;
--disable_result_log
SELECT count_alloc
FROM performance_schema.memory_summary_global_by_event_name
WHERE event_name = 'memory/temptable/physical_disk'
INTO @id1;
SELECT * FROM
t AS t1,
t AS t2,
t AS t3,
t AS t4,
t AS t5,
t AS t6
ORDER BY 1
LIMIT 2;
SELECT count_alloc
FROM performance_schema.memory_summary_global_by_event_name
WHERE event_name = 'memory/temptable/physical_disk'
INTO @id2;
--enable_result_log
SELECT @@internal_tmp_mem_storage_engine;
SHOW STATUS LIKE 'Created_tmp_tables';
SHOW STATUS LIKE 'Created_tmp_disk_tables';
SELECT (@id1=@id2);
--echo # ---------------------------------------------------------------------
--echo # Scenario 4: (ENGINE=TempTable, LIMIT=default, CASE=no-std-memory, RESULT=use_tempfiles)
--echo #
SET @@internal_tmp_mem_storage_engine = TempTable;
SET GLOBAL temptable_max_ram = 2097152;
--disable_result_log
SELECT count_alloc
FROM performance_schema.memory_summary_global_by_event_name
WHERE event_name = 'memory/temptable/physical_disk'
INTO @id1;
SELECT * FROM
t AS t1,
t AS t2,
t AS t3,
t AS t4,
t AS t5,
t AS t6
ORDER BY 1
LIMIT 2;
SELECT count_alloc
FROM performance_schema.memory_summary_global_by_event_name
WHERE event_name = 'memory/temptable/physical_disk'
INTO @id2;
--enable_result_log
SELECT @@internal_tmp_mem_storage_engine;
SHOW STATUS LIKE 'Created_tmp_tables';
SHOW STATUS LIKE 'Created_tmp_disk_tables';
SELECT (@id1<@id2);
SET @@internal_tmp_mem_storage_engine = default;
SET GLOBAL temptable_max_ram = default;
--echo # ---------------------------------------------------------------------
--echo # Scenario 5: (ENGINE=TempTable, LIMIT=default, CASE=no-disk-memory, RESULT=error)
--echo #
SET @@internal_tmp_mem_storage_engine = TempTable;
SET GLOBAL temptable_max_ram = 2097152;
SET debug = '+d,temptable_fetch_from_disk_return_null';
# When both RAM and MMAP limit is exhausted, optimizer shall recover by spilling over to new tmp disk tables (InnoDB)
-- disable_result_log
SELECT * FROM
t AS t1,
t AS t2,
t AS t3,
t AS t4,
t AS t5,
t AS t6
ORDER BY 1
LIMIT 2;
-- enable_result_log
SELECT @@internal_tmp_mem_storage_engine;
SHOW STATUS LIKE 'Created_tmp_tables';
SHOW STATUS LIKE 'Created_tmp_disk_tables';
SET @@internal_tmp_mem_storage_engine = default;
SET GLOBAL temptable_max_ram = default;
SET debug = '-d,temptable_fetch_from_disk_return_null';
# ---------------------------------------------------------------------
# Cleanup
#
DROP TABLE t;
SET optimizer_switch="hash_join=on";
|
