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Fix crash in BDB from improper cleanup of transactions, and avoid problem

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in NDB that the fix would cause due to improper registration of a transaction
that isn't meant to be seen by the handler layer. (Bug #14212)

Thanks to Sergei Golubchik for helping with this.
This commit is contained in:
jimw@mysql.com 2005-12-09 15:00:33 -08:00
parent a4cc61f213
commit d07a57c03a
4 changed files with 26 additions and 7 deletions
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5
mysql-test/r/bdb.result
View file

@ -1895,3 +1895,8 @@ t1 CREATE TABLE `t1` (
) ENGINE=BerkeleyDB DEFAULT CHARSET=latin1
drop table t1;
set storage_engine=MyISAM;
set autocommit=0;
create table t1 (a int) engine=bdb;
commit;
alter table t1 add primary key(a);
drop table t1;

11
mysql-test/t/bdb.test
View file

@ -973,3 +973,14 @@ drop table t1;
# End varchar test
eval set storage_engine=$default;
#
# Bug #14212: Server crash after COMMIT + ALTER TABLE
#
set autocommit=0;
create table t1 (a int) engine=bdb;
commit;
alter table t1 add primary key(a);
drop table t1;
# End of 5.0 tests

14
sql/ha_ndbcluster.cc
View file

@ -3221,6 +3221,10 @@ int ha_ndbcluster::external_lock(THD *thd, int lock_type)
if (lock_type != F_UNLCK)
{
DBUG_PRINT("info", ("lock_type != F_UNLCK"));
if (!thd->transaction.on)
m_transaction_on= FALSE;
else
m_transaction_on= thd->variables.ndb_use_transactions;
if (!thd_ndb->lock_count++)
{
PRINT_OPTION_FLAGS(thd);
@ -3235,7 +3239,8 @@ int ha_ndbcluster::external_lock(THD *thd, int lock_type)
ERR_RETURN(ndb->getNdbError());
no_uncommitted_rows_reset(thd);
thd_ndb->stmt= trans;
trans_register_ha(thd, FALSE, &ndbcluster_hton);
if (m_transaction_on)
trans_register_ha(thd, FALSE, &ndbcluster_hton);
}
else
{
@ -3250,7 +3255,8 @@ int ha_ndbcluster::external_lock(THD *thd, int lock_type)
ERR_RETURN(ndb->getNdbError());
no_uncommitted_rows_reset(thd);
thd_ndb->all= trans;
trans_register_ha(thd, TRUE, &ndbcluster_hton);
if (m_transaction_on)
trans_register_ha(thd, TRUE, &ndbcluster_hton);
/*
If this is the start of a LOCK TABLE, a table look
@ -3284,10 +3290,6 @@ int ha_ndbcluster::external_lock(THD *thd, int lock_type)
m_ha_not_exact_count= !thd->variables.ndb_use_exact_count;
m_autoincrement_prefetch=
(ha_rows) thd->variables.ndb_autoincrement_prefetch_sz;
if (!thd->transaction.on)
m_transaction_on= FALSE;
else
m_transaction_on= thd->variables.ndb_use_transactions;
m_active_trans= thd_ndb->all ? thd_ndb->all : thd_ndb->stmt;
DBUG_ASSERT(m_active_trans);

3
sql/handler.cc
View file

@ -1910,7 +1910,8 @@ int ha_enable_transaction(THD *thd, bool on)
is an optimization hint that storage engine is free to ignore.
So, let's commit an open transaction (if any) now.
*/
error= end_trans(thd, COMMIT);
if (!(error= ha_commit_stmt(thd)))
error= end_trans(thd, COMMIT);
}
DBUG_RETURN(error);
}