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BUG#45749 - Race condition in SET GLOBAL innodb_commit_concurrency=DEFAULT
Detailed revision comments:
r5419 | marko | 2009-06-25 16:11:57 +0300 (Thu, 25 Jun 2009) | 18 lines
branches/5.1: Merge r5418 from branches/zip:
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r5418 | marko | 2009-06-25 15:55:52 +0300 (Thu, 25 Jun 2009) | 5 lines
Changed paths:
M /branches/zip/ChangeLog
M /branches/zip/handler/ha_innodb.cc
M /branches/zip/mysql-test/innodb_bug42101-nonzero.result
M /branches/zip/mysql-test/innodb_bug42101-nonzero.test
M /branches/zip/mysql-test/innodb_bug42101.result
M /branches/zip/mysql-test/innodb_bug42101.test
branches/zip: Fix a race condition caused by
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.
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22 lines
617 B
Text
22 lines
617 B
Text
set global innodb_commit_concurrency=0;
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select @@innodb_commit_concurrency;
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@@innodb_commit_concurrency
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0
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set global innodb_commit_concurrency=1;
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ERROR HY000: Incorrect arguments to SET
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select @@innodb_commit_concurrency;
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@@innodb_commit_concurrency
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0
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set global innodb_commit_concurrency=42;
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ERROR HY000: Incorrect arguments to SET
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select @@innodb_commit_concurrency;
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@@innodb_commit_concurrency
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0
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set global innodb_commit_concurrency=0;
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select @@innodb_commit_concurrency;
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@@innodb_commit_concurrency
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0
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set global innodb_commit_concurrency=DEFAULT;
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select @@innodb_commit_concurrency;
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@@innodb_commit_concurrency
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0
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