Bug#16795 ndb_cache_multi2

 - Change && to ||
 - Check for return value != 0 in "ndb->init()"


mysql-test/r/ndb_cache_multi2.result:
  Update test result
mysql-test/t/ndb_cache_multi2.test:
  Update test case
  - add printouts for what server the queries are from
  - Run the query from "while" once on server1 to cache it
sql/ha_ndbcluster.cc:
  && => ||, to call both the function "thd->store_global()" and "ndb->init()" 
  ndb_init returns 0 on sucess. Fail if not zero.

mysql-test/r/ndb_cache_multi2.result

 drop table if exists t1, t2;
+== Connected to server1 ==
 set GLOBAL query_cache_type=on;
 set GLOBAL query_cache_size=1355776;
 set GLOBAL ndb_cache_check_time=1;
 reset query cache;
 flush status;
+== Connected to server2 ==
 set GLOBAL query_cache_type=on;
 set GLOBAL query_cache_size=1355776;
 set GLOBAL ndb_cache_check_time=1;
 reset query cache;
 flush status;
+== Connected to server1 ==
 create table t1 (a int) engine=ndbcluster;
 create table t2 (a int) engine=ndbcluster;
 insert into t1 value (2);
@@ -16,18 +19,22 @@ insert into t2 value (3);
 select * from t1;
 a
 2
+select a != 3 from t1;
+a != 3
+1
 select * from t2;
 a
 3
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
-Qcache_queries_in_cache	2
+Qcache_queries_in_cache	3
 show status like "Qcache_inserts";
 Variable_name	Value
-Qcache_inserts	2
+Qcache_inserts	3
 show status like "Qcache_hits";
 Variable_name	Value
 Qcache_hits	0
+== Connected to server2 ==
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	0
@@ -50,24 +57,13 @@ show status like "Qcache_hits";
 Variable_name	Value
 Qcache_hits	0
 update t1 set a=3 where a=2;
-show status like "Qcache_queries_in_cache";
-Variable_name	Value
-Qcache_queries_in_cache	2
-show status like "Qcache_inserts";
-Variable_name	Value
-Qcache_inserts	2
-show status like "Qcache_hits";
-Variable_name	Value
-Qcache_hits	0
+== Connected to server1 ==
 select * from t1;
 a
 3
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	3
-show status like "Qcache_inserts";
-Variable_name	Value
-Qcache_inserts	4
 drop table t1, t2;
 set GLOBAL query_cache_size=0;
 set GLOBAL ndb_cache_check_time=0;

mysql-test/t/ndb_cache_multi2.test

@@ -10,6 +10,7 @@ drop table if exists t1, t2;
 
 # Turn on and reset query cache on server1
 connection server1;
+echo == Connected to server1 ==;
 set GLOBAL query_cache_type=on;
 set GLOBAL query_cache_size=1355776;
 set GLOBAL ndb_cache_check_time=1;
@@ -18,6 +19,7 @@ flush status;
 
 # Turn on and reset query cache on server2
 connection server2;
+echo == Connected to server2 ==;
 set GLOBAL query_cache_type=on;
 set GLOBAL query_cache_size=1355776;
 set GLOBAL ndb_cache_check_time=1;
@@ -27,11 +29,14 @@ flush status;
 # Create test tables in NDB and load them into cache
 # on server1
 connection server1;
+echo == Connected to server1 ==;
 create table t1 (a int) engine=ndbcluster;
 create table t2 (a int) engine=ndbcluster;
 insert into t1 value (2);
 insert into t2 value (3);
 select * from t1;
+# Run the check query once to load it into qc on server1
+select a != 3 from t1;
 select * from t2;
 show status like "Qcache_queries_in_cache";
 show status like "Qcache_inserts";
@@ -40,6 +45,7 @@ show status like "Qcache_hits";
 
 # Connect server2, load table in to cache, then update the table
 connection server2;
+echo == Connected to server2 ==;
 show status like "Qcache_queries_in_cache";
 show status like "Qcache_inserts";
 show status like "Qcache_hits";
@@ -52,9 +58,7 @@ update t1 set a=3 where a=2;
 # Connect to server1 and check that cache is invalidated
 # and correct data is returned
 connection server1;
-show status like "Qcache_queries_in_cache";
-show status like "Qcache_inserts";
-show status like "Qcache_hits";
+echo == Connected to server1 ==;
 
 # Loop and wait for max 10 seconds until query cache thread
 # has invalidated the cache and the column a in t1 is equal to 3
@@ -75,8 +79,6 @@ select * from t1;
 
 # There should now be three queries in the cache
 show status like "Qcache_queries_in_cache";
-# And inserts should be four
-show status like "Qcache_inserts";
 
 drop table t1, t2;
 

sql/ha_ndbcluster.cc

@@ -6014,7 +6014,7 @@ pthread_handler_t ndb_util_thread_func(void *arg __attribute__((unused)))
   ndb_util_thread= pthread_self();
 
   thd->thread_stack= (char*)&thd; /* remember where our stack is */
-  if (thd->store_globals() && (ndb->init() != -1))
+  if (thd->store_globals() || (ndb->init() != 0))
   {
     thd->cleanup();
     delete thd;