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branches/zip: Fix a race condition caused by

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SET GLOBAL innodb_commit_concurrency=DEFAULT. (Bug #45749)
When innodb_commit_concurrency is initially set nonzero,
DEFAULT would change it back to 0, triggering Bug #42101.
rb://139 approved by Heikki Tuuri.
This commit is contained in:
marko
2009-06-25 11:55:52 +00:00
parent 3b765849d4
commit bb0e1c34df
6 changed files with 57 additions and 1 deletions
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6
mysql-test/innodb_bug42101-nonzero.result
View File

@@ -11,11 +11,15 @@ set global innodb_commit_concurrency=42;
select @@innodb_commit_concurrency;
@@innodb_commit_concurrency
42
set global innodb_commit_concurrency=DEFAULT;
select @@innodb_commit_concurrency;
@@innodb_commit_concurrency
1
set global innodb_commit_concurrency=0;
ERROR HY000: Incorrect arguments to SET
select @@innodb_commit_concurrency;
@@innodb_commit_concurrency
42
1
set global innodb_commit_concurrency=1;
select @@innodb_commit_concurrency;
@@innodb_commit_concurrency

2
mysql-test/innodb_bug42101-nonzero.test
View File

@@ -12,6 +12,8 @@ set global innodb_commit_concurrency=1;
select @@innodb_commit_concurrency;
set global innodb_commit_concurrency=42;
select @@innodb_commit_concurrency;
set global innodb_commit_concurrency=DEFAULT;
select @@innodb_commit_concurrency;
--error ER_WRONG_ARGUMENTS
set global innodb_commit_concurrency=0;
select @@innodb_commit_concurrency;

4
mysql-test/innodb_bug42101.result
View File

@@ -16,3 +16,7 @@ set global innodb_commit_concurrency=0;
select @@innodb_commit_concurrency;
@@innodb_commit_concurrency
0
set global innodb_commit_concurrency=DEFAULT;
select @@innodb_commit_concurrency;
@@innodb_commit_concurrency
0

2
mysql-test/innodb_bug42101.test
View File

@@ -15,3 +15,5 @@ set global innodb_commit_concurrency=42;
select @@innodb_commit_concurrency;
set global innodb_commit_concurrency=0;
select @@innodb_commit_concurrency;
set global innodb_commit_concurrency=DEFAULT;
select @@innodb_commit_concurrency;