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Bug#36326: nested transaction and select

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The problem is that the query cache stores packets containing
the server status of the time when the cached statement was run.
This might lead to a wrong transaction status in the client side
if a statement is cached during a transaction and is later served
outside a transaction context (and vice-versa).

The solution is to take into account the transaction status when
storing in and serving from the query cache.

mysql-test/r/innodb_cache.result:
  Update test case result.
mysql-test/r/query_cache.result:
  Add test case result for Bug#36326
mysql-test/t/query_cache.test:
  Add test case for Bug#36326
sql/mysql_priv.h:
  Add new flags.
sql/sql_cache.cc:
  Remember the transaction and autocommit status stored in the packet.
tests/mysql_client_test.c:
  Add test case for Bug#36326
This commit is contained in:
Davi Arnaut
2009-01-13 20:07:06 -02:00
parent 386ec13b59
commit 3d6cea324a
6 changed files with 158 additions and 9 deletions
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2
sql/mysql_priv.h
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@ -651,6 +651,8 @@ struct Query_cache_query_flags
unsigned int client_long_flag:1;
unsigned int client_protocol_41:1;
unsigned int more_results_exists:1;
unsigned int in_trans:1;
unsigned int autocommit:1;
unsigned int pkt_nr;
uint character_set_client_num;
uint character_set_results_num;