Marko Mäkelä 37e7bde12a MDEV-14425 preparation: Remove log_t::append_on_checkpoint ...

Simplify the logging of ALTER TABLE operations, by making use of the
TRX_UNDO_RENAME_TABLE undo log record that was introduced in
commit 0bc36758ba.

commit_try_rebuild(): Invoke row_rename_table_for_mysql() and
actually rename the files before committing the transaction.

fil_mtr_rename_log(), commit_cache_rebuild(),
log_append_on_checkpoint(), row_merge_rename_tables_dict(): Remove.

mtr_buf_copy_t, log_t::append_on_checkpoint: Remove.

row_rename_table_for_mysql(): If !use_fk, ignore missing foreign
keys. Remove a call to dict_table_rename_in_cache(), because
trx_rollback_to_savepoint() should invoke the function if needed.

2020-03-03 22:25:20 +02:00

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