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54 lines
2.0 KiB
Plaintext
54 lines
2.0 KiB
Plaintext
#
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# Bug #59733 Possible deadlock when buffered changes are to be discarded
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# in buf_page_create
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#
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-- source include/have_innodb.inc
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-- disable_query_log
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# The flag innodb_change_buffering_debug is only available in debug builds.
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# It instructs InnoDB to try to evict pages from the buffer pool when
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# change buffering is possible, so that the change buffer will be used
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# whenever possible.
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-- error 0,ER_UNKNOWN_SYSTEM_VARIABLE
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SET @innodb_change_buffering_debug_orig = @@innodb_change_buffering_debug;
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-- error 0,ER_UNKNOWN_SYSTEM_VARIABLE
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SET GLOBAL innodb_change_buffering_debug = 1;
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-- enable_query_log
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CREATE TABLE bug59733(a INT AUTO_INCREMENT PRIMARY KEY,b CHAR(1))ENGINE=InnoDB;
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# Create enough rows for the table, so that the insert buffer will be
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# used. There must be multiple index pages, because changes to the
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# root page are never buffered.
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INSERT INTO bug59733 VALUES(0,'x');
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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INSERT INTO bug59733 SELECT 0,b FROM bug59733;
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# Create the secondary index for which changes will be buffered.
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CREATE INDEX b ON bug59733 (b);
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# This should be buffered, if innodb_change_buffering_debug = 1 is in effect.
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DELETE FROM bug59733 WHERE (a%100)=0;
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# Drop the index in order to get free pages with orphaned buffered changes.
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DROP INDEX b ON bug59733;
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# Create the index and attempt to reuse pages for which buffered changes exist.
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CREATE INDEX b ON bug59733 (b);
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DROP TABLE bug59733;
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-- disable_query_log
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-- error 0, ER_UNKNOWN_SYSTEM_VARIABLE
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SET GLOBAL innodb_change_buffering_debug = @innodb_change_buffering_debug_orig;
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