Commit 797bbbd4 authored by unknown's avatar unknown

Merge bk-internal.mysql.com:/home/bk/mysql-5.0

into  chilla.local:/home/mydev/mysql-5.0-axmrg


sql/mysqld.cc:
  Auto merged
parents e409a8a5 b9234b1f
......@@ -46,7 +46,6 @@ typedef struct st_key_cache
my_bool key_cache_inited;
my_bool resize_in_flush; /* true during flush of resize operation */
my_bool can_be_used; /* usage of cache for read/write is allowed */
uint key_cache_shift;
ulong key_cache_mem_size; /* specified size of the cache memory */
uint key_cache_block_size; /* size of the page buffer of a cache block */
ulong min_warm_blocks; /* min number of warm blocks; */
......
......@@ -341,3 +341,30 @@ Warning 1438 Cannot drop default keycache
select @@global.key_buffer_size;
@@global.key_buffer_size
2097152
SET @bug28478_key_cache_block_size= @@global.key_cache_block_size;
SET GLOBAL key_cache_block_size= 1536;
CREATE TABLE t1 (
id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
c1 CHAR(150),
c2 CHAR(150),
c3 CHAR(150),
KEY(c1, c2, c3)
) ENGINE= MyISAM;
INSERT INTO t1 (c1, c2, c3) VALUES
('a', 'b', 'c'), ('b', 'c', 'd'), ('c', 'd', 'e'), ('d', 'e', 'f'),
('e', 'f', 'g'), ('f', 'g', 'h'), ('g', 'h', 'i'), ('h', 'i', 'j'),
('i', 'j', 'k'), ('j', 'k', 'l'), ('k', 'l', 'm'), ('l', 'm', 'n'),
('m', 'n', 'o'), ('n', 'o', 'p'), ('o', 'p', 'q'), ('p', 'q', 'r'),
('q', 'r', 's'), ('r', 's', 't'), ('s', 't', 'u'), ('t', 'u', 'v'),
('u', 'v', 'w'), ('v', 'w', 'x'), ('w', 'x', 'y'), ('x', 'y', 'z');
INSERT INTO t1 (c1, c2, c3) SELECT c1, c2, c3 from t1;
INSERT INTO t1 (c1, c2, c3) SELECT c1, c2, c3 from t1;
INSERT INTO t1 (c1, c2, c3) SELECT c1, c2, c3 from t1;
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SHOW VARIABLES LIKE 'key_cache_block_size';
Variable_name Value
key_cache_block_size 1536
SET GLOBAL key_cache_block_size= @bug28478_key_cache_block_size;
DROP TABLE t1;
......@@ -219,4 +219,31 @@ set global key_cache_block_size= @my_key_cache_block_size;
set @@global.key_buffer_size=0;
select @@global.key_buffer_size;
#
# Bug#28478 - Improper key_cache_block_size corrupts MyISAM tables
#
SET @bug28478_key_cache_block_size= @@global.key_cache_block_size;
SET GLOBAL key_cache_block_size= 1536;
CREATE TABLE t1 (
id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
c1 CHAR(150),
c2 CHAR(150),
c3 CHAR(150),
KEY(c1, c2, c3)
) ENGINE= MyISAM;
INSERT INTO t1 (c1, c2, c3) VALUES
('a', 'b', 'c'), ('b', 'c', 'd'), ('c', 'd', 'e'), ('d', 'e', 'f'),
('e', 'f', 'g'), ('f', 'g', 'h'), ('g', 'h', 'i'), ('h', 'i', 'j'),
('i', 'j', 'k'), ('j', 'k', 'l'), ('k', 'l', 'm'), ('l', 'm', 'n'),
('m', 'n', 'o'), ('n', 'o', 'p'), ('o', 'p', 'q'), ('p', 'q', 'r'),
('q', 'r', 's'), ('r', 's', 't'), ('s', 't', 'u'), ('t', 'u', 'v'),
('u', 'v', 'w'), ('v', 'w', 'x'), ('w', 'x', 'y'), ('x', 'y', 'z');
INSERT INTO t1 (c1, c2, c3) SELECT c1, c2, c3 from t1;
INSERT INTO t1 (c1, c2, c3) SELECT c1, c2, c3 from t1;
INSERT INTO t1 (c1, c2, c3) SELECT c1, c2, c3 from t1;
CHECK TABLE t1;
SHOW VARIABLES LIKE 'key_cache_block_size';
SET GLOBAL key_cache_block_size= @bug28478_key_cache_block_size;
DROP TABLE t1;
# End of 4.1 tests
......@@ -173,7 +173,7 @@ static void test_key_cache(KEY_CACHE *keycache,
#endif
#define KEYCACHE_HASH(f, pos) \
(((ulong) ((pos) >> keycache->key_cache_shift)+ \
(((ulong) ((pos) / keycache->key_cache_block_size) + \
(ulong) (f)) & (keycache->hash_entries-1))
#define FILE_HASH(f) ((uint) (f) & (CHANGED_BLOCKS_HASH-1))
......@@ -329,7 +329,6 @@ int init_key_cache(KEY_CACHE *keycache, uint key_cache_block_size,
keycache->key_cache_mem_size= use_mem;
keycache->key_cache_block_size= key_cache_block_size;
keycache->key_cache_shift= my_bit_log2(key_cache_block_size);
DBUG_PRINT("info", ("key_cache_block_size: %u",
key_cache_block_size));
......@@ -352,7 +351,7 @@ int init_key_cache(KEY_CACHE *keycache, uint key_cache_block_size,
ALIGN_SIZE(hash_links * sizeof(HASH_LINK)) +
ALIGN_SIZE(sizeof(HASH_LINK*) *
keycache->hash_entries))) +
((ulong) blocks << keycache->key_cache_shift) > use_mem)
((ulong) blocks * keycache->key_cache_block_size) > use_mem)
blocks--;
/* Allocate memory for cache page buffers */
if ((keycache->block_mem=
......@@ -1807,7 +1806,7 @@ byte *key_cache_read(KEY_CACHE *keycache,
uint status;
int page_st;
offset= (uint) (filepos & (keycache->key_cache_block_size-1));
offset= (uint) (filepos % keycache->key_cache_block_size);
/* Read data in key_cache_block_size increments */
do
{
......@@ -1946,7 +1945,7 @@ int key_cache_insert(KEY_CACHE *keycache,
int error;
uint offset;
offset= (uint) (filepos & (keycache->key_cache_block_size-1));
offset= (uint) (filepos % keycache->key_cache_block_size);
do
{
keycache_pthread_mutex_lock(&keycache->cache_lock);
......@@ -2081,7 +2080,7 @@ int key_cache_write(KEY_CACHE *keycache,
int page_st;
uint offset;
offset= (uint) (filepos & (keycache->key_cache_block_size-1));
offset= (uint) (filepos % keycache->key_cache_block_size);
do
{
keycache_pthread_mutex_lock(&keycache->cache_lock);
......
......@@ -88,6 +88,7 @@ my_off_t my_tell(File fd, myf MyFlags __attribute__((unused)))
os_off_t pos;
DBUG_ENTER("my_tell");
DBUG_PRINT("my",("Fd: %d MyFlags: %d",fd, MyFlags));
DBUG_ASSERT(fd >= 0);
#ifdef HAVE_TELL
pos=tell(fd);
#else
......
......@@ -178,6 +178,13 @@ MYSQL_LOCK *mysql_lock_tables(THD *thd, TABLE **tables, uint count,
}
else if (rc == 1) /* aborted */
{
/*
reset_lock_data is required here. If thr_multi_lock fails it
resets lock type for tables, which were locked before (and
including) one that caused error. Lock type for other tables
preserved.
*/
reset_lock_data(sql_lock);
thd->some_tables_deleted=1; // Try again
sql_lock->lock_count= 0; // Locks are already freed
}
......
......@@ -5819,7 +5819,7 @@ log and this option does nothing anymore.",
(gptr*) &dflt_key_cache_var.param_block_size,
(gptr*) 0,
0, (GET_ULONG | GET_ASK_ADDR), REQUIRED_ARG,
KEY_CACHE_BLOCK_SIZE , 512, 1024*16, MALLOC_OVERHEAD, 512, 0},
KEY_CACHE_BLOCK_SIZE, 512, 1024 * 16, 0, 512, 0},
{"key_cache_division_limit", OPT_KEY_CACHE_DIVISION_LIMIT,
"The minimum percentage of warm blocks in key cache",
(gptr*) &dflt_key_cache_var.param_division_limit,
......
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