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WL#2269 Enable query cache for NDB

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- Added a thread that fetches commit_count for open tables. This
will mean that NDB will not have to be contacted for every use of a cached query.
This commit is contained in:
msvensson@neptunus.homeip.net
2005-02-01 15:43:08 +01:00
parent cb7524e103
commit efd5ed2f9e
8 changed files with 708 additions and 74 deletions
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71
mysql-test/t/ndb_cache_multi2.test Normal file
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-- source include/have_query_cache.inc
-- source include/have_ndb.inc
-- source include/have_multi_ndb.inc
--disable_warnings
drop table if exists t1, t2;
--enable_warnings
# Turn on and reset query cache on server1
connection 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;
# Turn on and reset query cache on server2
connection 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;
# Sleep so that the query cache check thread has time to start
sleep 15;
# Create test tables in NDB and load them into cache
# on server1
connection 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;
select * from t2;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
# Connect server2, load table in to cache, then update the table
connection server2;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
select * from t1;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
update t1 set a=3 where a=2;
# Sleep so that the query cache check thread has time to run
sleep 5;
# 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";
select * from t1;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
drop table t1, t2;