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Bug #47863 binlog_format should be writable only at transaction boundaries

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When @@session.binlog_format is modified inside a transaction,
it can cause slave to go out of sync.
      
To fix the problem, make the session variable 'binlog_format' 
read-only inside a transaction.


mysql-test/suite/binlog/r/binlog_format_switch_inside_trans.result:
  Test result for bug#47863.
mysql-test/suite/binlog/t/binlog_format_switch_inside_trans.test:
  Added test file to verify if the session variable 'binlog_format' 
  is read-only inside a transaction and in sub-statements.
sql/set_var.cc:
  Added code to make the session variable 'binlog_format'
  read-only inside a transaction.
This commit is contained in:
unknown
2009-12-23 18:43:45 +08:00
parent 03324f6a0a
commit f87816b450
4 changed files with 198 additions and 0 deletions
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2
sql/share/errmsg.txt
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@@ -6249,3 +6249,5 @@ ER_DEBUG_SYNC_TIMEOUT
ER_DEBUG_SYNC_HIT_LIMIT
eng "debug sync point hit limit reached"
ger "Debug Sync Point Hit Limit erreicht"
ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_FORMAT
eng "Cannot modify @@session.binlog_format inside a transaction"