on B-tree index pages.
page_rec_set_next(): Assert that rec != next.
rec_get_next_ptr(), rec_get_next_offs(): On compact pages, assert that
there are at least REC_N_NEW_EXTRA_BYTES + 1 between records.
page_cur_insert_rec_write_log(): Replace a buf_frame_align() call
with ut_align_offset().
page_cur_insert_rec_low(): Assert that current_rec != insert_rec.
page_zip_reorganize() was invoked.
btr_compress(): Obtain orig_pred and orig_succ after copying the records.
Add a debug assertion about FIL_PAGE_PREV.
page_copy_rec_list_end(), page_copy_rec_list_start(): Change the return
type from ibool to rec_t. Adjust the return value after invoking
page_zip_reorganize().
page_zip_assertion() failure in page_copy_rec_list_end().
btr_root_raise_and_insert(), btr_lift_page_up(), btr_compress():
Add page_zip_validate() assertions.
btr_compress(): Only copy FIL_PAGE_PREV when UNIV_BTR_DEBUG is defined.
page_cur_delete_rec(): Document why the page_zip_validate() assertion
was removed.
page_copy_rec_list_end(): Remove the page_zip_validate() assertion and
document why.
page_move_rec_list_end(): Add page_zip_validate() assertion.
page_cur_delete_rec(): Do not call page_zip_validate() in the beginning,
because btr_set_min_rec_mark() in btr_cur_pessimistic_delete() will
cause a temporary mismatch.
Document temporary mismatches caused by btr_set_min_rec_mark() calls
and explain why they will not cause any problems.
os_aio_simulated_handle(): Temporarily disable os_file_check_page_trailers(),
which cannot be invoked on compressed pages.
dict_table_add_system_columns(): New function, split from
dict_table_add_to_cache().
mlog_parse_index(): Add system columns to the dummy table and identify
DB_TRX_ID and DB_ROLL_PTR in the dummy index.
buf_LRU_get_free_block(): Note that page_zip->data should be allocated from
an aligned memory pool.
buf_flush_buffered_writes(): Write compressed pages to disk.
buf_flush_post_to_doublewrite_buf(): Copy compressed pages to the
doublewrite buffer. Zero fill any excess space.
buf_flush_init_for_writing(): Treat all compressed pages the same.
buf_read_page_low(): Read compressed pages from disk.
buf_page_io_complete(): Process compressed pages.
trx_sys_doublewrite_init_or_restore_page(): Process compressed pages.
mlog_write_initial_log_record_fast(): Enable a debug printout
#ifdef UNIV_LOG_DEBUG.
fsp_header_init(), fsp_fill_free_list(): Pass the compressed page size
to buf_page_create().
page_zip_compress_write_log(): Flatten the if-else if-else logic.
page_zip_parse_write_blob_ptr(): Do not test page_zip if page==NULL.
page_zip_parse_write_node_ptr(): Do not test page_zip if page==NULL.
Invoke mlog_close() correctly.
row_sel_store_row_id_to_prebuilt(): Add UNIV_UNLIKELY hint to an
assertion-like test.
page_zip_compress_write_log(): Make static.
page_zip_compress(): Add optional parameter mtr for redo logging.
page_zip_reorganize(): Low-level counterpart of btr_page_reorganize().
page_zip_copy(): Add debug assertions about mtr_memo_contains.
page_cur_insert_rec_low(): Try page_zip_reorganize() and seek to the
new position of insert_rec if it succeeds.
page_copy_rec_list_end(), page_copy_rec_list_start():
Try page_zip_reorganize().
page_move_rec_list_end(): Remove bogus comment.
page_zip_copy(), page_zip_compress_write_log(): Add parameter 'index'.
page_zip_parse_write_header(): Check for !page_zip only if page != NULL.
page_zip_compress_write_log(), page_zip_parse_compress(): Omit some
fields in the page header. Omit the unused bytes between the modification
log and the page trailer.
parse_or_apply_log_rec_body(): Remove a bogus debug assertion.
page_move_rec_list_start() and page_move_rec_list_end(). Relax the
conditions on insert_will_fit if page_zip is set.
page_delete_rec_list_start(): Make public.
page_zip_copy(): Clear REC_INFO_MIN_REC_FLAG if FIL_PAGE_PREV != FIL_NULL.
btr_validate_level(): Add missing parameter to added buf_page_print() calls.
btr_root_raise_and_insert(): Replace low-level code with page_zip_copy().
page_zip_copy(): New function to copy the data payload of a compressed page,
byte for byte. The file page header and trailer are not copied, to avoid
overwriting the fields FIL_PAGE_OFFSET, FIL_PAGE_PREV and FIL_PAGE_NEXT.
btr_cur_compress_if_useful(): Replace if () return(); return() with return.
page_rec_get_next_low(): New function.
page_rec_get_prev(): Invoke page_is_comp() outside the loop.
Replace page_rec_get_next() with loop-specific instances of
page_rec_get_next_low().
page_copy_rec_list_end(): Add some debug assertions.
btr_root_raise_and_insert(): If page_copy_rec_list_end() fails,
copy the pages byte for byte.
page_zip_compress(): Ensure that the uncompressed storage area will
fit on the compressed 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.
btr_page_reorganize_low(): Rename new_page to temp_page.
btr_store_big_rec_extern_fields(): FIL_PAGE_TYPE is 2 bytes, not 4.
buf_page_init(), buf_page_create(), buf_read_page_low(),
buf_page_init_for_read(): Add parameter zip_size.
buf_page_init_for_backup_restore(),
recv_apply_log_recs_for_backup(): Enclose in #ifdef UNIV_HOTBACKUP.
Enclose some debug code in #ifdef UNIV_LOG_REPLICATE.
page_zip_write_header_log(): Replace page_zip with a pointer to
the uncompressed page.
page_zip_write_rec(): Relax an assertion about blob_no + n_ext.
page_copy_rec_list_to_created_page_write_log(): Allow logging to be disabled.
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.
page_zip_alloc(): Add parameter "mtr" and log successful calls
to page_zip_compress().
page_zip_write_blob_ptr(), page_zip_write_node_ptr(): Write the offset on
the uncompressed page, because mlog_write_initial_log_record_fast()
does not do so.
page_zip_write_header_log(), page_zip_parse_write_header(): Encode the
offset in one byte.
MLOG_ZIP_COMPRESS and MLOG_ZIP_DECOMPRESS with higher-level entry types.
Implement the logging and crash recovery of MLOG_ZIP_PAGE_CREATE.
page_create_zip(): New function for creating a compressed B-tree page.
page_parse_create_zip(): New function for applying a MLOG_ZIP_PAGE_CREATE
redo log record.
btr_page_create(): Remove the prototype. Add parameters page_zip, level,
prev, and next.
btr0btr.c: Eliminate page_zip_compress() calls where possible.
page_zip_alloc(), page_zip_compress(), page_zip_decompress(),
page_zip_clear_rec(): Remove parameter mtr.
recv_parse_or_apply_log_rec_body(): Handle MLOG_ZIP_PAGE_CREATE.
Add TODO comments for the other added redo log entry types.
page_zip_parse_write_blob_ptr(): New function for applying the redo log
record MLOG_ZIP_WRITE_BLOB_PTR.
page_zip_write_blob_ptr(): Write the necessary information to the redo log.
page0zip.c: Tighten the assertions to ensure that blob_ptr < page_zip->n_blobs.
page_zip_write_node_ptr(): Use memcpy() instead of mach_write_to_4().
page_zip_parse_write_header(): New function for applying the redo log of
MLOG_ZIP_WRITE_HEADER.
page_zip_parse_write_node_ptr(): Mark the log corrupted if !page_zip.
page_zip_parse_write_node_ptr(): New function to apply a redo log of
MLOG_ZIP_WRITE_NODE_PTR.
page_zip_write_node_ptr(): Write all needed information to the redo log.
page_zip_write_header_log(): Write all necessary information to the redo log.
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.
Replace btr_page_get_level() with page_is_leaf() where possible.
row_purge_upd_exist_or_extern(): Remove obsolete TODO comment.
dtuple_convert_big_rec(): Replace a flag variable with goto.
btr_store_big_rec_extern_fields(): Assert that page_zip is non-NULL
if and only if dict_table_is_zip() holds.
btr_free_externally_stored_field(): Observe dict_table_is_zip().
Allow page_zip==NULL even if dict_table_is_zip(). Remove the
related TODO comment in row_purge_upd_exist_or_extern().
page_zip_available(): uncompressed_size already includes
PAGE_ZIP_DIR_SLOT_SIZE.
page_zip_decompress(): Remove bogus assertion d_stream.next_out == last.
Do not subtract BTR_EXTERN_FIELD_REF_SIZE from d_stream.avail_in when
decompressing records, because the records may be deleted later in
page_zip_apply_log(), and no BLOB pointers are allocated for deleted
records.
btr_page_split_and_insert(): Avoid dereferencing pointers to garbage on
the old page.
btr_cur_pessimistic_insert(): Pass pointer to big_rec_vec to
btr_cur_optimistic_insert().
trx_undo_prev_version_build(): Only invoke rec_set_field_extern_bits()
if n_ext_vect > 0.
row_ins_index_entry_low(): Simplify a debug assertion.
page_copy_rec_list_end_no_locks(): Make the loop slightly more readable.
page_delete_rec_list_end(): Delete records on compressed pages one by one.
page_zip_get_n_prev_extern(): Ignore deleted records.
page_zip_write_rec(): Remove bogus debug assertion about the BLOB pointer
being zero-filled. It would fail when reallocating records from the page
heap or when updating records in place.
copy BLOB pointers.
page_zip_dir_find_free_low(): New function,
split from page_zip_dir_find_free().
Add comments about processing the records in heap_no order.
Fix some typographic errors in comments and improve formatting.
page_zip_decompress(): Initialize (clear) the BLOB pointers in deleted records.
page_zip_clear_rec(): Relocate page_zip_validate() assertions, so that they
will not fail if a record containing BLOB pointers is being deleted.
Note that page_zip_validate() will fail if page_zip_clear_rec() is unable
to clear the record.
page_zip_decompress(): Pass size = d_stream.avail_in + 1
to page_zip_apply_log(), since the terminating NUL byte is not included
in the space reserved for the compressed data stream.
page_zip_clear_rec(): Clear also node pointer fields.
page_delete_rec_list_end(): Do not invoke page_zip_clear_rec().
page_zip_clear_rec(): Remove the global declaration. Add an assertion
that the record must be on the free list. Copy onl rec_offs_data_size()
bytes before attempting to clear the record and to compress the page.
page_zip_compress(), page_zip_write_rec(): Remove debug assertions that
trx_id, roll_ptr and node_ptr of deleted records be zero-filled.
page_zip_compress(): Add a debug check that the trx_id and roll_ptr columns
of deleted records are zero-filled. This should provide some detection
against misdirected writes.
page_zip_decompress(): Correct typos in comments.
btr_page_get_father_for_rec(): Remove redundant assertion.
Add UNIV_UNLIKELY to an assertion-like test.
btr_validate_level(): Add debug assertions on page_zip_validate().
page_zip_compress(): Remove bogus assertion.
page_zip_write_rec(): Assert that the record written is neither delete-marked
nor deleted.
page_zip_compress(): Assert that trx_id and roll_ptr are zero for
deleted records.
page_zip_clear_rec(): Remove comment about need for redo logging.
This operationg is already logged on a higher level.
page_delete_rec_list_end(): Always invoke page_zip_clear_rec()
on compressed pages.
Restore page_zip_clear_rec() to the global scope.
Invoke it in page_delete_rec_list_end().
Add debug assertions to page0zip.c to guard against overwriting data
on the compressed page.
