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Bug#35103 mysql_client_test::test_bug29948 causes sporadic failures

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The problem was that the COM_STMT_SEND_LONG_DATA was sending a response
packet if the prepared statement wasn't found in the server (due to
reconnection). The commands COM_STMT_SEND_LONG_DATA and COM_STMT_CLOSE
should not send any packets, even error packets should not be sent since
they are not expected by the client API.

The solution is to clear generated during the execution of the aforementioned
commands and to skip resend of prepared statement commands. Another fix is
that if the connection breaks during the send of prepared statement command,
the command is not sent again since the prepared statement is no longer in the
server.
This commit is contained in:
davi@mysql.com/endora.local
2008-03-14 17:40:12 -03:00
parent 2b09a99340
commit f23e3fd04c
4 changed files with 30 additions and 92 deletions
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10
sql-common/client.c
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@ -665,11 +665,12 @@ my_bool
cli_advanced_command(MYSQL *mysql, enum enum_server_command command,
const char *header, ulong header_length,
const char *arg, ulong arg_length, my_bool skip_check,
MYSQL_STMT *stmt __attribute__((unused)))
MYSQL_STMT *stmt)
{
NET *net= &mysql->net;
my_bool result= 1;
init_sigpipe_variables
my_bool stmt_skip= stmt ? stmt->state != MYSQL_STMT_INIT_DONE : FALSE;
DBUG_ENTER("cli_advanced_command");
/* Don't give sigpipe errors if the client doesn't want them */
@ -677,7 +678,7 @@ cli_advanced_command(MYSQL *mysql, enum enum_server_command command,
if (mysql->net.vio == 0)
{ /* Do reconnect if possible */
if (mysql_reconnect(mysql))
if (mysql_reconnect(mysql) || stmt_skip)
DBUG_RETURN(1);
}
if (mysql->status != MYSQL_STATUS_READY ||
@ -708,7 +709,7 @@ cli_advanced_command(MYSQL *mysql, enum enum_server_command command,
goto end;
}
end_server(mysql);
if (mysql_reconnect(mysql))
if (mysql_reconnect(mysql) || stmt_skip)
goto end;
if (net_write_command(net,(uchar) command, header, header_length,
arg, arg_length))
@ -2503,6 +2504,9 @@ my_bool mysql_reconnect(MYSQL *mysql)
if (stmt->state != MYSQL_STMT_INIT_DONE)
{
stmt->mysql= 0;
stmt->last_errno= CR_SERVER_LOST;
strmov(stmt->last_error, ER(CR_SERVER_LOST));
strmov(stmt->sqlstate, unknown_sqlstate);
}
else
{