The error message due to lack of the default value for an extra field
was not as informative as it should be.
Fixed with improving the scheme of gathering, propagating and reporting
errors in applying rows events.
The scheme is in the following.
Any kind of error of processing of a row event incidents are to be
registered with my_error().
In the end Rows_log_event::do_apply_event() invokes rli->report() with the
message to display consisting of all the errors.
This mimics `show warnings' displaying.
A simple test checks three errors in processing an event.
Two hunks - a user level error and pushing it into the list -
have been devoted to already fixed Bug@31702.
Some open issues relating to this artifact listed on BUG@21842 page and
on WL@3679.
Todo: to synchronize the statement in the tests comments on Update and Delete
events may not stop when an extra field does not have a default with wl@3228 spec.
without PK
Bug#31609 Not all RBR slave errors reported as errors
bug#32468 delete rows event on a table with foreign key constraint fails
The first two bugs comprise idempotency issues.
First, there was no error code reported under conditions of the bug
description although the slave sql thread halted.
Second, executions were different with and without presence of prim key in
the table.
Third, there was no way to instruct the slave whether to ignore an error
and skip to the following event or to halt.
Fourth, there are handler errors which might happen due to idempotent
applying of binlog but those were not listed among the "idempotent" error
list.
All the named issues are addressed.
Wrt to the 3rd, there is the new global system variable, changeble at run
time, which controls the slave sql thread behaviour.
The new variable allows further extensions to mimic the sql_mode
session/global variable.
To address the 4th, the new bug#32468 had to be fixed as it was staying
in the way.
Fixing tests and results to work when replicating to fewer columns on
slave than on master. One test that previously should fail, now works,
and some log positions have changed as a result of adding metadata to
the events.
Field_bit::set_default() did not check the bit_len, hence used the undefined
bit_ptr, causing a crash. The patch adds a check that bit_len > 0 before
following the bit_ptr.
