Below is the list of changes that have just been committed into a local
5.0 repository of ted. When ted does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
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see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html
ChangeSet@stripped, 2006-11-16 04:11:16+03:00, ted@stripped +6 -0
BUG #4291 fix: new configuration option "disk-tmp-table-size"
introduced to set maximum expected on-disk temporary table size
and avoid mix-up of tmp_table_size and max_heap_table_size
mysql-test/r/disk_tmp_table.result@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +42 -0
Results recorded out of disk_tmp_table test
mysql-test/r/disk_tmp_table.result@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +0 -0
mysql-test/t/disk_tmp_table.test@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +31 -0
Test to check on-disk temporary table creation
mysql-test/t/disk_tmp_table.test@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +0 -0
sql/mysqld.cc@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +6 -1
"disk-tmp-table-size" option introduced
sql/set_var.cc@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +4 -0
"disk-tmp-table-size" option introduced
sql/sql_class.h@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +1 -0
"disk-tmp-table-size" option introduced
sql/sql_select.cc@stripped, 2006-11-16 04:11:12+03:00, ted@stripped +3 -3
now tmp_table_size is used just like the manual says; made use of disk_tmp_table_size
as the hint about ISAM temporary table size
# This is a BitKeeper patch. What follows are the unified diffs for the
# set of deltas contained in the patch. The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User: ted
# Host: ted.mysql.internal
# Root: /home/ted/src/mysql/mysql-5.0-maint
--- 1.579/sql/mysqld.cc 2006-11-16 04:11:23 +03:00
+++ 1.580/sql/mysqld.cc 2006-11-16 04:11:23 +03:00
@@ -4620,7 +4620,7 @@
OPT_SLAVE_TRANS_RETRIES, OPT_READONLY, OPT_DEBUGGING,
OPT_SORT_BUFFER, OPT_TABLE_CACHE,
OPT_THREAD_CONCURRENCY, OPT_THREAD_CACHE_SIZE,
- OPT_TMP_TABLE_SIZE, OPT_THREAD_STACK,
+ OPT_TMP_TABLE_SIZE, OPT_DISK_TMP_TABLE_SIZE, OPT_THREAD_STACK,
OPT_WAIT_TIMEOUT, OPT_MYISAM_REPAIR_THREADS,
OPT_INNODB_MIRRORED_LOG_GROUPS,
OPT_INNODB_LOG_FILES_IN_GROUP,
@@ -6007,6 +6007,11 @@
(gptr*) &global_system_variables.tmp_table_size,
(gptr*) &max_system_variables.tmp_table_size, 0, GET_ULONG,
REQUIRED_ARG, 32*1024*1024L, 1024, ~0L, 0, 1, 0},
+ {"disk_tmp_table_size", OPT_DISK_TMP_TABLE_SIZE,
+ "The temporary table cannot (much) exceed this size on disk.",
+ (gptr*) &global_system_variables.disk_tmp_table_size,
+ (gptr*) &max_system_variables.disk_tmp_table_size, 0, GET_ULONG,
+ REQUIRED_ARG, 64*1024*1024L, 2048, ~0L, 0, 1, 0},
{"transaction_alloc_block_size", OPT_TRANS_ALLOC_BLOCK_SIZE,
"Allocation block size for transactions to be stored in binary log",
(gptr*) &global_system_variables.trans_alloc_block_size,
--- 1.308/sql/sql_class.h 2006-11-16 04:11:23 +03:00
+++ 1.309/sql/sql_class.h 2006-11-16 04:11:23 +03:00
@@ -528,6 +528,7 @@
ulong sortbuff_size;
ulong table_type;
ulong tmp_table_size;
+ ulong disk_tmp_table_size;
ulong tx_isolation;
ulong completion_type;
/* Determines which non-standard SQL behaviour should be enabled */
--- 1.472/sql/sql_select.cc 2006-11-16 04:11:23 +03:00
+++ 1.473/sql/sql_select.cc 2006-11-16 04:11:23 +03:00
@@ -9255,9 +9255,9 @@
table->s->max_rows= ~(ha_rows) 0;
else
table->s->max_rows= (((table->s->db_type == DB_TYPE_HEAP) ?
- min(thd->variables.tmp_table_size,
- thd->variables.max_heap_table_size) :
- thd->variables.tmp_table_size)/ table->s->reclength);
+ min(thd->variables.disk_tmp_table_size,
+ thd->variables.tmp_table_size) :
+ thd->variables.disk_tmp_table_size)/ table->s->reclength);
set_if_bigger(table->s->max_rows,1); // For dummy start options
/*
Push the LIMIT clause to the temporary table creation, so that we
--- 1.171/sql/set_var.cc 2006-11-16 04:11:23 +03:00
+++ 1.172/sql/set_var.cc 2006-11-16 04:11:23 +03:00
@@ -417,6 +417,8 @@
fix_tx_isolation);
sys_var_thd_ulong sys_tmp_table_size("tmp_table_size",
&SV::tmp_table_size);
+sys_var_thd_ulong sys_disk_tmp_table_size("disk_tmp_table_size",
+ &SV::disk_tmp_table_size);
sys_var_bool_ptr sys_timed_mutexes("timed_mutexes",
&timed_mutexes);
sys_var_const_str sys_version("version", server_version);
@@ -762,6 +764,7 @@
&sys_time_zone,
&sys_tmpdir,
&sys_tmp_table_size,
+ &sys_disk_tmp_table_size,
&sys_trans_alloc_block_size,
&sys_trans_prealloc_size,
&sys_tx_isolation,
@@ -1083,6 +1086,7 @@
{"time_zone", (char*) &sys_time_zone, SHOW_SYS},
{sys_timed_mutexes.name, (char*) &sys_timed_mutexes, SHOW_SYS},
{sys_tmp_table_size.name, (char*) &sys_tmp_table_size, SHOW_SYS},
+ {sys_disk_tmp_table_size.name, (char*) &sys_disk_tmp_table_size, SHOW_SYS},
{sys_tmpdir.name, (char*) &sys_tmpdir, SHOW_SYS},
{sys_trans_alloc_block_size.name, (char*) &sys_trans_alloc_block_size,
SHOW_SYS},
--- New file ---
+++ mysql-test/r/disk_tmp_table.result 06/11/16 04:11:12
DROP TABLE IF EXISTS t1;
Warnings:
Note 1051 Unknown table 't1'
CREATE TABLE t1 ( a VARCHAR(250) );
INSERT INTO t1 SELECT RAND() FROM (SELECT 0 a UNION SELECT 1 UNION SELECT 2
UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION
SELECT 8 UNION SELECT 9) a, (SELECT 0 a UNION SELECT 10 UNION SELECT 20 UNION
SELECT 30 UNION SELECT 40 UNION SELECT 50 UNION SELECT 60 UNION SELECT 70 UNION
SELECT 80 UNION SELECT 90) b, (SELECT 0 a UNION SELECT 100 UNION SELECT 200
UNION SELECT 300 UNION SELECT 400 UNION SELECT 500 UNION SELECT 600 UNION SELECT
700 UNION SELECT 800 UNION SELECT 900) c;
SET tmp_table_size=0;
SET disk_tmp_table_size=0;
FLUSH STATUS;
SELECT SQL_NO_CACHE a, COUNT(*) FROM t1 GROUP BY a ORDER BY NULL LIMIT 1;
SHOW VARIABLES LIKE '%tmp_table_size';
Variable_name Value
tmp_table_size 1024
disk_tmp_table_size 2048
SHOW STATUS LIKE 'created_tmp_disk_tables';
Variable_name Value
Created_tmp_disk_tables 1
FLUSH STATUS;
SET tmp_table_size=32*1024*1024;
SELECT SQL_NO_CACHE a, COUNT(*) FROM t1 GROUP BY a ORDER BY NULL LIMIT 1;
SHOW VARIABLES LIKE '%tmp_table_size';
Variable_name Value
tmp_table_size 33554432
disk_tmp_table_size 2048
SHOW STATUS LIKE 'created_tmp_disk_tables';
Variable_name Value
Created_tmp_disk_tables 1
FLUSH STATUS;
SET disk_tmp_table_size=64*1024*1024;
SELECT SQL_NO_CACHE a, COUNT(*) FROM t1 GROUP BY a ORDER BY NULL LIMIT 1;
SHOW VARIABLES LIKE '%tmp_table_size';
Variable_name Value
tmp_table_size 33554432
disk_tmp_table_size 67108864
SHOW STATUS LIKE 'created_tmp_disk_tables';
Variable_name Value
Created_tmp_disk_tables 0
--- New file ---
+++ mysql-test/t/disk_tmp_table.test 06/11/16 04:11:12
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 ( a VARCHAR(250) );
INSERT INTO t1 SELECT RAND() FROM (SELECT 0 a UNION SELECT 1 UNION SELECT 2
UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION
SELECT 8 UNION SELECT 9) a, (SELECT 0 a UNION SELECT 10 UNION SELECT 20 UNION
SELECT 30 UNION SELECT 40 UNION SELECT 50 UNION SELECT 60 UNION SELECT 70 UNION
SELECT 80 UNION SELECT 90) b, (SELECT 0 a UNION SELECT 100 UNION SELECT 200
UNION SELECT 300 UNION SELECT 400 UNION SELECT 500 UNION SELECT 600 UNION SELECT
700 UNION SELECT 800 UNION SELECT 900) c;
SET tmp_table_size=0;
SET disk_tmp_table_size=0;
FLUSH STATUS;
--disable_result_log
SELECT SQL_NO_CACHE a, COUNT(*) FROM t1 GROUP BY a ORDER BY NULL LIMIT 1;
--enable_result_log
SHOW VARIABLES LIKE '%tmp_table_size';
SHOW STATUS LIKE 'created_tmp_disk_tables';
FLUSH STATUS;
SET tmp_table_size=32*1024*1024;
--disable_result_log
SELECT SQL_NO_CACHE a, COUNT(*) FROM t1 GROUP BY a ORDER BY NULL LIMIT 1;
--enable_result_log
SHOW VARIABLES LIKE '%tmp_table_size';
SHOW STATUS LIKE 'created_tmp_disk_tables';
FLUSH STATUS;
SET disk_tmp_table_size=64*1024*1024;
--disable_result_log
SELECT SQL_NO_CACHE a, COUNT(*) FROM t1 GROUP BY a ORDER BY NULL LIMIT 1;
--enable_result_log
SHOW VARIABLES LIKE '%tmp_table_size';
SHOW STATUS LIKE 'created_tmp_disk_tables';
| Thread |
|---|
| • bk commit into 5.0 tree (ted:1.2311) BUG#4291 | Vladimir Shebordaev | 16 Nov |
