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mdev-7802-binlog_groupcommit_stats

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Update the description of each test case as to why it is
counted in the correct binlog_group_commit_trigger_* variable.

Updated rpl_parallel_multilevel2.test to identify that 3 groups
occur in statement and mixed replication and one group in row based
replication.
This commit is contained in:
Daniel Black
2015-04-03 01:34:30 +11:00
parent 1d5220d112
commit 0695fdd9df
3 changed files with 39 additions and 12 deletions
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18
mysql-test/suite/binlog/t/binlog_commit_wait.test
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@ -51,6 +51,11 @@ reap;
SET @b= unix_timestamp(current_timestamp()) - unix_timestamp(@a);
SELECT IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"));
# All connections are to the same server. One transaction occurs on con1. It is
# commited before con2 is started. con2 transaction violates the unique key contraint. This
# type of group commit is binlog_group_commit_trigger_lock_wait so that further con2
# transactions will occur afterwards as they may be as result of the ER_DUP_ENTRY on the
# application side.
# before: binlog_group_commit=0, binlog_group_commit_trigger_count=0
# before: binlog_group_commit_trigger_timeout=0, binlog_group_commit_trigger_lock_wait=0
# after: binlog_group_commit+1 by reason of binlog_group_commit_trigger_lock_wait+1
@ -90,6 +95,10 @@ reap;
SET @b= unix_timestamp(current_timestamp()) - unix_timestamp(@a);
SELECT IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"));
# All connections are to the same server. 3 non-conflicting transaction occur
# on each connection. The binlog_commit_wait_count=3 at the start therefore 1
# group is committed by virtue of reaching 3 transactions. Hence
# binlog_group_commit_trigger_count is incremented.
# before: binlog_group_commit=1, binlog_group_commit_trigger_count=0
# before: binlog_group_commit_trigger_timeout=0, binlog_group_commit_trigger_lock_wait=1
# after: binlog_group_commit+1 by reason of binlog_group_commit_trigger_count+1
@ -136,6 +145,9 @@ reap;
SET @b= unix_timestamp(current_timestamp()) - unix_timestamp(@a);
SELECT IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"));
# All connections are to the same server. con2 and con3 updates are aquiring
# the same row lock for a=1. Either con2 or con3 will be in a lock wait
# thefore the binlog_group_commit_trigger_lock_wait is incremented.
# before: binlog_group_commit=2, binlog_group_commit_trigger_count=1
# before: binlog_group_commit_trigger_timeout=0, binlog_group_commit_trigger_lock_wait=1
# after: binlog_group_commit+1 by reason of binlog_group_commit_trigger_lock_wait+1
@ -163,6 +175,8 @@ reap;
SET @b= unix_timestamp(current_timestamp()) - unix_timestamp(@a);
SELECT IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"));
# The con1 and con2 transactions above are combined with the 'send UPDATE t1 SET b=b+10 WHERE a=1;'
# on con3 from the previous block. So we have 3 so this is a count based group.
# before: binlog_group_commit=3, binlog_group_commit_trigger_count=1
# before: binlog_group_commit_trigger_timeout=0, binlog_group_commit_trigger_lock_wait=2
# after: binlog_group_commit+1 by reason of binlog_group_commit_trigger_count+1
@ -190,6 +204,10 @@ SET @b= unix_timestamp(current_timestamp()) - unix_timestamp(@a);
SELECT IF(@b < 4, CONCAT("Error: too little time elapsed: ", @b, " seconds < 4"),
IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20")));
# con1 pushes 1 transaction. The count was for 3 to occur before a group commit.
# The timeout is 5 seconds but we allow between 4 and 20 because of the fragile nature
# of time in test. This is a timeout causing the commit so binlog_group_commit_trigger_timeout
# is incremented.
# before: binlog_group_commit=4, binlog_group_commit_trigger_count=2
# before: binlog_group_commit_trigger_timeout=0, binlog_group_commit_trigger_lock_wait=2
# after: binlog_group_commit+1 by reason of binlog_group_commit_trigger_timeout+1