in row_truncate_table_for_mysql()

 MDEV-14632 Assertion `!((new_col->prtype ^ col->prtype) & ~256U)' failed in row_log_table_apply_convert_mrec

Follow up on comments.

Assertion `thd->locked_tables_mode <= LTM_LOCK_TABLES ||
!thd->lex->requires_prelocking()' failed in lock_tables().

SQL: class Table_locker

sql/table.h:1531:17: warning: enumeral and non-enumeral type in conditional expression [-Wextra]

* test results
* HISTORY in ora parser

This reverts commit b13f1cc5

Don't scan the list of added columns for every row
in copy_data_between tables.

Error ER_VERS_TRT_IS_DISABLED is not thrown.

MDEV-14689 Server crashes in find_field_in_tables on 2nd execution of PS with versioned table and view

SQL: wrong usage of Item::transform()

MDEV-14632 Assertion `!((new_col->prtype ^ col->prtype) & ~256U)' failed in row_log_table_apply_convert_mrec

ha_innobase::check_if_supported_inplace_alter(): enabled non-rebuilding operations for trx_id-based system-versioning tables

Also added better error message for not implemented operations.

debug_key_management
encrypt_and_grep

Related to 62b44b0e

1. Reverts "Tests: disabled TRT for some IB tests [#302]"
6d78496a

2. Removes setting TRANSACTION_REGISTRY=0 in mysqldump

--system-versioning-transaction-registry now is OFF by default.

This commit should be reverted back if the default will change.

Tests affected: mysqldump mysqldump-max openssl_1

Merge branch '10.3' into trunk

SQL: disable system-versioning stuff on TEMPORARY tables

Now that MDEV-14717 made RENAME TABLE crash-safe within InnoDB,
it should be safe to drop the #sql- tables within InnoDB during
crash recovery. These tables can be one of two things:

(1) #sql-ib related to deferred DROP TABLE (follow-up to MDEV-13407)
or to table-rebuilding ALTER TABLE...ALGORITHM=INPLACE
(since MDEV-14378, only related to the intermediate copy of a table),

(2) #sql- related to the intermediate copy of a table during
ALTER TABLE...ALGORITHM=COPY

We will not drop tables whose name starts with #sql2, because
the server can be killed during an ALGORITHM=COPY operation at
a point where the original table was renamed to #sql2 but the
finished intermediate copy was not yet renamed from #sql-
to the original table name.

InnoDB in MariaDB 10.2 appears to only write MLOG_FILE_RENAME2
redo log records during table-rebuilding ALGORITHM=INPLACE operations.
We must write the records for any .ibd file renames, so that the
operations are crash-safe.

If InnoDB is killed during a RENAME TABLE operation, it can happen that
the transaction for updating the data dictionary will be rolled back.
But, nothing will roll back the renaming of the .ibd file
(the MLOG_FILE_RENAME2 only guarantees roll-forward), or for that matter,
the renaming of the dict_table_t::name in the dict_sys cache. We introduce
the undo log record TRX_UNDO_RENAME_TABLE to fix this.

fil_space_for_table_exists_in_mem(): Remove the parameters
adjust_space, table_id and some code that was trying to work around
these deficiencies.

fil_name_write_rename(): Write a MLOG_FILE_RENAME2 record.

dict_table_rename_in_cache(): Invoke fil_name_write_rename().

trx_undo_rec_copy(): Set the first 2 bytes to the length of the
copied undo log record.

trx_undo_page_report_rename(), trx_undo_report_rename():
Write a TRX_UNDO_RENAME_TABLE record with the old table name.

row_rename_table_for_mysql(): Invoke trx_undo_report_rename()
before modifying any data dictionary tables.

row_undo_ins_parse_undo_rec(): Roll back TRX_UNDO_RENAME_TABLE
by invoking dict_table_rename_in_cache(), which will take care
of both renaming the table and the file.

MDEV-14632 Assertion `!((new_col->prtype ^ col->prtype) & ~256U)' failed in row_log_table_apply_convert_mrec

SQL, IB: proper fix is to disable unimplemented Online DDL for system-versioned tables inside InnoDB

Also fixes broken truncate after 617e108f

ER_VERS_NOT_VERSIONED vs ER_VERSIONING_REQUIRED

ER_VERS_GENERATED_ALWAYS_NOT_EMPTY vs ER_VERS_ALTER_SYSTEM_FIELD

Related to #310 (91ba4f04).

Follow-up to MDEV-13407 innodb.drop_table_background failed in buildbot with "Tablespace for table exists"

The InnoDB background DROP TABLE queue is something that we should
really remove, but are unable to until we remove dict_operation_lock
so that DDL and DML operations can be combined in a single transaction.

Because the queue is not persistent, it is not crash-safe. We should
in some way ensure that the deferred-dropped tables will be dropped
after server restart.

The existence of two separate transactions complicates the error handling
of CREATE TABLE...SELECT. We should really not break locks in DROP TABLE.

Our solution to these problems is to rename the table to a temporary
name, and to drop such-named tables on InnoDB startup. Also, the
queue will use table IDs instead of names from now on.

check-testcase.test: Ignore #sql-ib*.ibd files, because tables may enter
the background DROP TABLE queue shortly before the test finishes.

innodb.drop_table_background: Test CREATE...SELECT and the creation of
tables whose file name starts with #sql-ib.

innodb.alter_crash: Adjust the recovery, now that the #sql-ib tables
will be dropped on InnoDB startup.

row_mysql_drop_garbage_tables(): New function, to drop all #sql-ib tables
on InnoDB startup.

row_drop_table_for_mysql_in_background(): Remove an unnecessary and
misplaced call to log_buffer_flush_to_disk(). (The call should have been
after the transaction commit. We do not care about flushing the redo log
here, because the table would be dropped again at server startup.)

Remove the entry from the list after the table no longer exists.

If server shutdown has been initiated, empty the list without actually
dropping any tables. They will be dropped again on startup.

row_drop_table_for_mysql(): Do not call lock_remove_all_on_table().
Instead, if locks exist, defer the DROP TABLE until they do not exist.
If the table name does not start with #sql-ib, rename it to that prefix
before adding it to the background DROP TABLE queue.