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Bug#20837 Apparent change of isolation level during transaction

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Bug#46527 COMMIT AND CHAIN RELEASE does not make sense
Bug#53343 completion_type=1, COMMIT/ROLLBACK AND CHAIN don't 
          preserve the isolation level
Bug#53346 completion_type has strange effect in a stored 
          procedure/prepared statement

Added test cases to verify the expected behaviour of :
 SET SESSION TRANSACTION ISOLATION LEVEL, 
 SET TRANSACTION ISOLATION LEVEL,
 @@completion_type,
 COMMIT AND CHAIN,
 ROLLBACK AND CHAIN
 ..and some combinations of the above
This commit is contained in:
Magne Mahre
2010-06-08 19:47:10 +02:00
parent da8c33ba7c 946fad3502
commit db716d11af
19 changed files with 939 additions and 64 deletions
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3
sql/handler.cc
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@@ -1302,7 +1302,6 @@ int ha_commit_one_phase(THD *thd, bool all)
if (thd->transaction.changed_tables)
query_cache.invalidate(thd->transaction.changed_tables);
#endif
thd->variables.tx_isolation=thd->session_tx_isolation;
}
}
/* Free resources and perform other cleanup even for 'empty' transactions. */
@@ -1379,8 +1378,6 @@ int ha_rollback_trans(THD *thd, bool all)
if (is_real_trans && thd->transaction_rollback_request &&
thd->transaction.xid_state.xa_state != XA_NOTR)
thd->transaction.xid_state.rm_error= thd->stmt_da->sql_errno();
if (all)
thd->variables.tx_isolation=thd->session_tx_isolation;
}
/* Always cleanup. Even if nht==0. There may be savepoints. */
if (is_real_trans)