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BUG#49562: SBR out of sync when using numeric data types + user

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variable

The User_var_log_event was not serializing the unsigned
flag. This would cause the slave to always assume signed values.

We fix this by extending the User_var_log_event to also contain
information on the unsigned_flag, meaning that it gets into the
binlog as well, therefore the slave will get this information as
well. Events without information on unsigned flag (old events)
are treated as they were before (always signed: unsigned_flag=
FALSE).

The information on the unsigned_flag, is shipped in an extra byte
appended to the end of the User_var_log_event and added by this
patch. This extra byte holds values for general purpose
User_var_log_event flags which are now packed in the binlog as
well. One of these flags contains information about whether the
value is signed or unsigned (currently this extra byte is only
used to hold data on the unsigned flag, in the future we can use
it to pack extra flags if there is the need to).
This commit is contained in:
Luis Soares
2010-01-15 17:52:46 +00:00
parent 54b2371e92
commit 2afa7085e9
6 changed files with 470 additions and 10 deletions
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4
mysql-test/suite/rpl/r/rpl_slave_skip.result
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@@ -118,7 +118,7 @@ Master_User root
Master_Port MASTER_PORT
Connect_Retry 1
Master_Log_File master-bin.000001
Read_Master_Log_Pos 386
Read_Master_Log_Pos 387
Relay_Log_File #
Relay_Log_Pos #
Relay_Master_Log_File master-bin.000001
@@ -133,7 +133,7 @@ Replicate_Wild_Ignore_Table
Last_Errno 0
Last_Error
Skip_Counter 0
Exec_Master_Log_Pos 386
Exec_Master_Log_Pos 387
Relay_Log_Space #
Until_Condition None
Until_Log_File