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Code Activity

WL#775 "Add status variable identifying binlog_cache_size shortage"

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Added two status variables: 
  binlog_cache_use - counts number of transactions that used somehow
    transaction temporary binary log.
  binlog_cache_disk_use - counts number of transactions that required
    disk I/O for storing info in this this binary log.
This commit is contained in:
dlenev@jabberwock.localdomain
2004-04-02 00:47:20 +04:00
parent ad7e09dec4
commit a80f46bfdf
9 changed files with 77 additions and 3 deletions
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15
mysql-test/r/rpl_relayrotate.result
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@ -16,4 +16,19 @@ master_pos_wait('master-bin.001',3000)>=0
select * from t1 where a=8000;
a
8000
show status like "binlog_cache_use";
Variable_name Value
Binlog_cache_use 1
show status like "binlog_cache_disk_use";
Variable_name Value
Binlog_cache_disk_use 1
begin;
delete from t1;
commit;
show status like "binlog_cache_use";
Variable_name Value
Binlog_cache_use 2
show status like "binlog_cache_disk_use";
Variable_name Value
Binlog_cache_disk_use 1
drop table t1;

1
mysql-test/t/rpl_relayrotate-master.opt Normal file
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@ -0,0 +1 @@
--binlog_cache_size=32768

22
mysql-test/t/rpl_relayrotate.test
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@ -58,6 +58,24 @@ start slave;
select master_pos_wait('master-bin.001',3000)>=0;
select * from t1 where a=8000;
connection master;
# binlog_cache_use and binlog_cache_disk_use status vars test
# This test uses the previous test. Namely, it needs the long
# transaction that adds 8000 lines to the t1 table.
show status like "binlog_cache_use";
show status like "binlog_cache_disk_use";
# transaction which should not be flushed to disk and so should not
# increase binlog_cache_disk_use
begin;
delete from t1;
commit;
show status like "binlog_cache_use";
show status like "binlog_cache_disk_use";
# The following DROP is a very important cleaning task:
# imagine the next test is run with --skip-innodb: it will do
# DROP TABLE IF EXISTS t1; but this will delete the frm and leave
@ -68,3 +86,7 @@ select * from t1 where a=8000;
# InnoDB: Error: table t1 already exists in InnoDB internal
# InnoDB: data dictionary. Have you deleted the .frm file etc
drop table t1;
# wait until this drop is executed on slave
save_master_pos;
connection slave;
sync_with_master;