a few places accordingly.
os_aio_simulated_handle(): Add TODO comments about skipping the write
checks for compressed pages.
dict_create_sys_tables_tuple(): Write the compressed page size to
the TYPE column.
open_or_create_data_files(): Simplify the fil_node_create() call.
fil_node_create(): Do not touch space->zip_size. It was already initialized
by fil_space_create().
fil_reset_too_high_lsns(), buf_flush_buffered_writes(): Add TODO comment
about compressed pages.
buf_flush_init_for_writing(): Handle pages of type FIL_PAGE_INODE,
FIL_PAGE_IBUF_BITMAP, and FIL_PAGE_TYPE_FSP_HDR as uncompressed ones.
btr_root_raise_and_insert(): When copying root to new_page byte for byte,
restore the page number of new_page afterwards.
buf_flush_init_for_writing(): For FIL_PAGE_INDEX, write the page number
and space id also to the uncompressed page.
Introduce FIL_PAGE_ZBLOB_DATA as a synonym for FIL_PAGE_FILE_FLUSH_LSN.
btr_store_big_rec_extern_fields(): Make the assertion about
dict_table_zip_size() more accurate.
buf_LRU_get_free_block(), buf_block_alloc(): Add parameter zip_size.
buf_calc_zblob_page_checksum(): Remove. Replace with page_zip_calc_checksum().
buf_page_init(): Remove parameter zip_size.
buf_page_io_complete(): Add a placeholder for handling compressed pages.
trx_doublewrite_page_inside(): Remove redundant function.
page_zip_write_rec(): Relax an overly tight assertion about blob_no.
buf_page_print(): Print also compressed pages. Add parameter zip_size.
buf_flush_init_for_writing(): Stamp the fields on a compressed B-tree index
page.
Add the header field FIL_PAGE_ZBLOB_SPACE_ID as an alias of FIL_PAGE_PREV.
page_zip_calc_checksum(): New function.
page_zip_compress(): Avoid copying the fields that are written in
buf_flush_init_for_writing().
page_zip_header_cmp(): New function for comparing those fields of the
page header that will not be written in buf_flush_init_for_writing().
buf_flush_init_for_writing(): Calculate the checksum with the actual zip_size.
buf_calc_zblob_page_checksum(): Skip the field FIL_PAGE_SPACE_OR_CHKSUM.
trx_sys_doublewrite_init_or_restore_page(): Use the actual zip_size.
page_cur_insert_rec_low(): If page_zip_alloc() fails, try compressing the
whole page afterwards.
and to the file space header (FSP_PAGE_ZIP_SIZE, renamed from
FSP_LOWEST_NO_WRITE).
fil_space_struct: Add zip_size.
dict_table_struct: Embed zip_size in flags.
dict_table_zip_size(): Infer zip_size from table->flags.
dict_sys_tables_get_zip_size(): Read zip_size from SYS_TABLES.TYPE.
fil_space_get_zip_size(): Read zip_size from the file space header.
Add the redo log entry type MLOG_ZIP_FILE_CREATE.
dict_mem_table_create(): Account for DICT_TF_COMPRESSED in a debug assertion.
btr_store_big_rec_extern_fields(), btr_free_externally_stored_field(),
btr_copy_externally_stored_field(): Implement the disk format for
compressed BLOB pages.
btr_copy_externally_stored_field(): Improve error reporting and handling
when decompressing BLOB pages.
buf_flush_init_for_writing(), buf_page_is_corrupted(), buf_page_print():
Account for compressed BLOB pages (FIL_PAGE_TYPE_ZBLOB).
buf_calc_zblob_page_checksum(): New function.
btr_create(): page_zip_compress() returns FALSE on failure.
page_zip_write_header(): Write to page_zip->data[] instead of page_zip[].
buf_flush_init_for_writing(): Add parameter page_zip and set the fields
also in the header of the compressed page.
btr_cur_search_to_nth_level(): Add ut_ad() on page_zip_validate().
that will require complete index information.
dict_create_index_step(): invoke dict_index_add_to_cache() before btr_create()
dict_index_remove_from_cache(): make public
dict_index_get_if_in_cache_low(): new function, for holding dict_sys->mutex
buf_flush_init_for_writing(): remove the temporary hook to page_zip_compress()
page_create(): add temporary hook to page_zip_compress()
buf_flush_init_for_writing(): The reported dense page directory size was
4 bytes too much. Subtract 2 (infimum and supremum) from n_heap.
page_zip_decompress(): When decompressing the last user record, only set
heap_no and the status bits if there is data to decode, i.e., there
are user records on the page.
buf_flush_init_for_writing(): Improve the diagnostics and make the
condition for skipping pages accurate.
univ.i: Introduce UNIV_ZIP_DEBUG for enabling some page_zip_validate() tests.
page0zip.h, page0zip.c: Define and use page_zip_validate() in
page_zip_compress() and page_zip_write() if UNIV_ZIP_DEBUG or UNIV_DEBUG
is defined.
Before the speedc test was interrupted, 121,765 B-tree pages were written.
buf_flush_init_for_writing(): Do not compress other than B-tree pages
outside the system tablespace. Report non-B-tree pages.
page_zip_decompress(): Clear the unused heap space on the uncompressed page,
so that the whole buffer for the uncompressed page will be initialized and
page_zip_validate() will always succeed.
A page with multiple records or deleted records still does not compress
or decompress properly.
buf_flush_init_for_writing(): Initialize block->page_zip properly so that all
assertions in page0zip can be enabled.
page_zip_decompress(): Note that corrupt data should not lead to assertions.
page_zip_dir_set(): Correct the interface. Fix off-by-one error.
page_zip_dir_get(): Fix off-by-one error.
page0zip.c: Replace n_heap with n_dense and add comments about
the infimum and supremum records whenever we subtract 2 from heap_no.
Fix some programming errors.
buf0flu.c: Allocate the temporary buffer from buf_frame_alloc().
page_zip_simple_validate(): Do not assert page_zip->m_start >= PAGE_DATA.
page_zip_compress(): Replace some assertions with page_zip_simple_validate(),
and do not assert anything about page_zip->data contents.
page_zip_validate(): Do not compare the page trailer bytes.
page_zip_write(): Assert that the entire page headers match and
that page_zip->m_start >= PAGE_DATA.
