Bug #41390 | mysqlbinlog doesn't properly handle local slow IO | ||
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Submitted: | 11 Dec 2008 10:55 | Modified: | 11 Dec 2008 13:33 |
Reporter: | N Tucker | Email Updates: | |
Status: | Verified | Impact on me: | |
Category: | MySQL Server | Severity: | S2 (Serious) |
Version: | 3.2, 4.1, 5.0, 5.1, 6.0 bzr | OS: | Linux (pc-linux-gnu i486) |
Assigned to: | CPU Architecture: | Any |
[11 Dec 2008 10:55]
N Tucker
[11 Dec 2008 10:58]
N Tucker
Note: why this would be useful: because then you could casually watch your binlog by doing: tail -f -n +0 mybinlog | mysqlbinlog - ...which would be fun. Seriously: fun.
[11 Dec 2008 13:33]
Sveta Smirnova
Thank you for the report. Verified as described. Problem exists in all current versions. $cat ./data511/mysqld511-shella-bin.001104 | ./bin/mysqlbinlog - /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; mysqlbinlog: mf_iocache.c:492: _my_b_read: Assertion `my_errno != 29' failed. Aborted $ ./bin/mysqlbinlog - < ./data511/mysqld511-shella-bin.001104 /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; # at 4 #070716 19:08:22 server id 511 end_log_pos 106 Start: binlog v 4, server v 5.1.21-beta-debug-log created 070716 19:08:22 at startup # Warning: this binlog was not closed properly. Most probably mysqld crashed writing it. ROLLBACK/*!*/; BINLOG ' BqabRg//AQAAZgAAAGoAAAABAAQANS4xLjIxLWJldGEtZGVidWctbG9nAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAGpptGEzgNAAgAEgAEBAQEEgAAUwAEGggAAAAICAgC '/*!*/; DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;