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Fix Bug#53046 dict_update_statistics_low can still be run concurrently on same table

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Replace the array of mutexes that used to protect
dict_index_t::stat_n_diff_key_vals[] with an array of rw locks that protects
all the stats related members in dict_table_t and all of its indexes.

Approved by:	Jimmy (rb://503)
This commit is contained in:
Vasil Dimov
2010-11-02 18:57:20 +02:00
parent addb147533
commit 49cbbf6ea4
8 changed files with 215 additions and 73 deletions
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27
mysql-test/suite/innodb_plugin/r/innodb_bug53046.result Normal file
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CREATE TABLE bug53046_1 (c1 INT PRIMARY KEY) ENGINE=INNODB;
CREATE TABLE bug53046_2 (c2 INT PRIMARY KEY,
FOREIGN KEY (c2) REFERENCES bug53046_1(c1)
ON UPDATE CASCADE ON DELETE CASCADE) ENGINE=INNODB;
INSERT INTO bug53046_1 VALUES (1);
INSERT INTO bug53046_1 SELECT c1+(SELECT MAX(c1) FROM bug53046_1)
FROM bug53046_1;
INSERT INTO bug53046_1 SELECT c1+(SELECT MAX(c1) FROM bug53046_1)
FROM bug53046_1;
INSERT INTO bug53046_1 SELECT c1+(SELECT MAX(c1) FROM bug53046_1)
FROM bug53046_1;
INSERT INTO bug53046_1 SELECT c1+(SELECT MAX(c1) FROM bug53046_1)
FROM bug53046_1;
INSERT INTO bug53046_1 SELECT c1+(SELECT MAX(c1) FROM bug53046_1)
FROM bug53046_1;
INSERT INTO bug53046_2 VALUES (1), (2);
ANALYZE TABLE bug53046_1;
Table Op Msg_type Msg_text
test.bug53046_1 analyze status OK
SHOW TABLE STATUS LIKE 'bug53046_1';
UPDATE bug53046_1 SET c1 = c1 - 1;
DELETE FROM bug53046_1;
INSERT INTO bug53046_1 VALUES (1);
INSERT INTO bug53046_2 VALUES (1);
TRUNCATE TABLE bug53046_2;
DROP TABLE bug53046_2;
DROP TABLE bug53046_1;