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MDEV-16328 ALTER TABLE…page_compression_level should not rebuild table

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The table option page_compression_level is something that only
affects future writes, not actually the data format. Therefore,
we can allow instant changes of this option.

Similarly, the table option page_compressed can be set on a
previously uncompressed table without rebuilding the table,
because an uncompressed page would be considered valid when
reading a page_compressed table.

Removing the page_compressed option will continue to require
the table to be rebuilt.

ha_innobase_inplace_ctx::page_compression_level: The requested
page_compression_level at the start of ALTER TABLE, or 0 if
page_compressed=OFF.

alter_options_need_rebuild(): Renamed from
create_option_need_rebuild(). Allow page_compression_level and
page_compressed to be changed as above, without rebuilding the table.

ha_innobase::check_if_supported_inplace_alter(): Allow ALGORITHM=INSTANT
for ALTER_OPTIONS if the table is not to be rebuilt. If rebuild is
needed, set ha_alter_info->unsupported_reason.

innobase_page_compression_try(): Update SYS_TABLES.TYPE according
to the table flags, for an instant change of page_compression_level
or page_compressed.

commit_cache_norebuild(): Adjust dict_table_t::flags, fil_space_t::flags
and (if needed) FSP_SPACE_FLAGS if page_compression_level was specified.
This commit is contained in:
Marko Mäkelä
2018-09-17 14:22:30 +03:00
parent c5a9a63293
commit ac24289e66
20 changed files with 450 additions and 239 deletions
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8
mysql-test/suite/innodb/r/innodb-page_compression_tables.result
View File

@ -88,8 +88,12 @@ select count(*) from innodb_dynamic where c1 < 1500000;
count(*)
5000
set global innodb_compression_algorithm = 0;
alter table innodb_compact engine=innodb page_compressed=DEFAULT;
alter table innodb_dynamic engine=innodb page_compressed=DEFAULT;
alter table innodb_compact page_compressed=DEFAULT, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Changing table options requires the table to be rebuilt. Try ALGORITHM=INPLACE
alter table innodb_compact page_compressed=DEFAULT;
alter table innodb_dynamic page_compressed=DEFAULT, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Changing table options requires the table to be rebuilt. Try ALGORITHM=INPLACE
alter table innodb_dynamic page_compressed=DEFAULT;
show create table innodb_compact;
Table Create Table
innodb_compact CREATE TABLE `innodb_compact` (