Problem 1: main.loaddata tried to trigger an error caused by
reading files outside the vardir, by reading itself. However,
if loaddata.test is not world-readable (e.g., umask=0077),
then another error is triggered.
Fix 1: allow the other error too.
Problem 2: rpl_slave_skip and rpl_innodb_mixed_dml tried to
copy a file from mysql-test/suite/rpl/data to mysql-test/var
and then read it. That failed too if umask=0077, since the
file would not become world-readable.
Fix 2: move the files from mysql-test/suite/rpl/data to
mysql-test/std_data and update tests accordingly. Remove
the directory mysql-test/suite/rpl/data.
This bug has been fixed in two slightly different ways in
6.0-rpl and {5.1,6.0}-bugteam. To avoid future merge
problems, I'm now copying the 6.0-rpl fix to 5.1-bugteam.
The previous fix for the bug was incomplete. The test failed
because t2 did not exist on the slave (since the slave was
lagging) when the
wait_condition was executed. Fixed by inserting
sync_slave_with_master just after t2 was created.
In order to handle CHAR() fields, 8 bits were reserved for
the size of the CHAR field. However, instead of denoting the
number of characters in the field, field_length was used which
denotes the number of bytes in the field.
Since UTF-8 fields can have three bytes per character (and
has been extended to have four bytes per character in 6.0),
an extra two bits have been encoded in the field metadata
work for fields of type Field_string (i.e., CHAR fields).
Since the metadata word is filled, the extra bits have been
encoded in the upper 4 bits of the real type (the most
significant byte of the metadata word) by computing the
bitwise xor of the extra two bits. Since the upper 4 bits
of the real type always is 1111 for Field_string, this
means that for fields of length <256, the encoding is
identical to the encoding used in pre-5.1.26 servers, but
for lengths of 256 or more, an unrecognized type is formed,
causing an old slave (that does not handle lengths of 256
or more) to stop.
Problem: rpl_switch_stm_row_mixed did not wait until row events generated by
INSERT DELAYED were written to the master binlog before it synchronized slave
with master. This caused sporadic errors where these rows were missing on
slave.
Fix: wait until all rows appear on the slave.
This is a backport, applying the same to 5.1-bugteam as was previously
applied to 6.0-rpl
On a slow environment like valgrind the test is vulnerable
because it does not check if slave has stopped at time
of the new session is requested `start slave;' -- disabling
test till it is fixed.
The test is vulnerable because it does not check if slave has stopped at time
of the new session is requested `start slave;'
Fixed with deploying explicitly wait_for_slave_to_stop synchronization macro.
Problem: If INSERT is immediately followed by SELECT in another thread,
the newly inserted rows may not be returned by the SELECT statement, if
ENGINE=myisam and @@concurrent_insert=1. This caused sporadic errors in
rpl_insert_id.
Fix: The test now uses ENGINE=$engine_type when creating tables (so that
innodb is used). It also turns off @@concurrent_insert around the critical
place, so that it works if someone in the future writes a test that sets
$engine_type=myisam before sourcing extra/rpl_tests/rpl_insert_id.test.
It also adds ORDER BY to all SELECTs so that the result is deterministic.
When flushing tables, there were a slight chance that the flush was occuring
between processing of two table map events. Since the tables are opened
one by one, it might result in that the tables were not valid and that sub-
sequent locking of tables would cause the slave to crash.
The problem is solved by opening and locking all tables at once using
simple_open_n_lock_tables(). Also, the patch contain a change to open_tables()
so that pre-locking only takes place when the trg_event_map is not zero, which
was not the case before (this caused the lock to be placed in thd->locked_tables
instead of thd->lock since the assumption was that triggers would be called
later and therefore the tables should be pre-locked).
Temporarily checking in an incorrect test case. Rationale: the impact of
this bug is negligible (it's almost a feature request). We need 5.1 to be
stable, and making a real fix is a bit risky. So the fix is postponed
to 6.0.
The test suite/rpl/t/rpl_innodb_bug28430.test was disabled because of
BUG#32247, but not re-enabled when BUG#32247 was fixed. I've re-enabled
it. The test and result file needed to be updated too.
Select of the test could not perform deterministically, because the table remains to be
updatable by the running event handler.
Fixed with changing verification to use a logical values instead of comparison
with a pre-recorded results.
Among two claimed artifacts the critical one is in that the Table map of
a query following the failing with a duplicate key error CREATE-SELECT is skipped from
instantionating (and thus binlogging). That leads to sending a "chopped" group of the data
row-events without the table map head to the slave.
The slave can not apply the only data row events.
It's not easy to force the slave to react with an error in such a case (the second complaint
on the bug report), because the lack of a table Rows_log_event::do_apply_event the data row event
handler is a common situation which normally designates the event has to be filtered out
basing on the repliation do/ingore rules decision.
Fixed: table map creating and binlogging is restored via deploying the standard cleanup call in
select_create::abort().
No error is reported if by chance the table map was not been binlogged.
Leaving this out to resolve with considering how to combine the do/ingore rules with the situation
when erronoulsy the Table_map is not written to binlog.
