filter_mysqlbinlogp - Online in the Cloud

PROGRAM:

NAME

filter_mysqlbinlog - Trimming ROLLBACK statements and equivalent BINLOG events added by
mysqlbinlog. This script is now obsolete.

SYNOPSIS

mysqlbinlog binary_or_relay_log_file | filter_mysqlbinlog

Note that this script is now obsolete and not used by MHA by default.

DESCRIPTION

mysqlbinlog command provided by Oracle implicitly adds ROLLBACK statements and equivalent
BINLOG events. But this causes problems when recovering slave servers. To recover slaves,
MHA might need to apply the following binlog events.
1) Relay log events from Relay_Log_Pos to the end of the relay log file
2) Differential relay log events from the latest slave
3) Differential binary log events from the dead master mysqlbinlog command needs to be
executed on these files separately. If a transaction does not end by 1) or 2), implicit
ROLLBACK event rolls back the transaction, which will result in inconsistency.
filter_mysqlbinlog is a tool to fix this issue. Note that ROLLBACK statements themselves
are added in usual situations. For example, when you execute 1. BEGIN; 2. Updating
transactional tables 3. Updating non-transactional tables 4. ROLLBACK, a ROLLBACK
statement is written to the binary log to rollback transactional queries. This is normal
situation so filter_mysqlbinlog must not remove all ROLLBACK events.

Note that this script is now obsolete and not used by MHA by default.

Use filter_mysqlbinlogp online using onworks.net services