from the adaptive hash index [btr_search_guess_on_hash() and
btr_search_validate()]. Some references to buf_block_align() remain
in debug builds.
btr_store_big_rec_extern_fields(): Add the parameter rec_block.
page_rec_get_next_low(): Do not assume that the page has been
allocated from the buffer pool when printing the diagnostic information.
page_cur_insert_rec_low(): Replace the parameter page_zip_des_t* page_zip
with the parameter buf_block_t* block.
page_set_max_trx_id(): Replace page_t* parameter with buf_block_t*,
to avoid a buf_block_align() call.
Replace some occurrences of page_get_page_no() with buf_block_get_page_no().
page_cur_delete_rec(): Replace buf_block_align() with page_cur_get_block().
btr_cur_t: Move page_block to page_cur_t::block.
page_cur_get_block(), page_cur_get_page_zip(): New functions.
page_cur_position(): Add parameter block.
Remove many page_zip parameters, now that there is page_cur_get_page_zip().
Replace some page, page_zip parameters with block.
Add some const qualifiers to function parameters and remove casts.
PAGE_HEAP_NO_INFIMUM, PAGE_HEAP_NO_SUPREMUM, PAGE_HEAP_NO_USER_LOW:
New constants.
Replace some cursor code in low-level diagnostic functions with
direct management of rec, because buf_block_t::buf_fix_count may be 0
when the functions are called, and debug assertions would fail.
of externally stored columns, and fix bugs introduced in r873. (Bug #22496)
btr_page_get_sure_split_rec(), btr_page_insert_fits(),
rec_get_converted_size(), rec_convert_dtuple_to_rec(),
rec_convert_dtuple_to_rec_old(), rec_convert_dtuple_to_rec_new():
Add parameters ext and n_ext. Flag external fields during the
conversion.
rec_set_field_extern_bits(), rec_set_field_extern_bits_new(),
rec_offs_set_nth_extern(), rec_set_nth_field_extern_bit_old():
Remove. The bits are set by rec_convert_dtuple_to_rec().
page_cur_insert_rec_low(): Remove the parameters ext and n_ext.
btr_cur_add_ext(): New utility function for updating and sorting ext[].
Low-level functions now expect the array to be in ascending order
for performance reasons. Used in btr_cur_optimistic_insert(),
btr_cur_pessimistic_insert(), and btr_cur_pessimistic_update().
btr_cur_optimistic_insert(): Remove some defensive code, because we cannot
compute the added parameters of rec_get_converted_size().
btr_push_update_extern_fields(): Sort the array. Require the array to
be twice the maximum usage, so that ut_ulint_sort() can be used.
dtuple_convert_big_rec(): Allocate new space for the BLOB pointer,
to avoid overwriting prefix indexes to the same column. Adapt
dtuple_convert_back_big_rec().
row_build_index_entry(): Fetch the columns also for prefix indexes of
the clustered index.
page_zip_apply_log(), page_zip_decompress_clust(): Allow externally
stored fields to lack a locally stored part.
on the ZIP_DUMMY index. Because it does not contain valid collation
information, the ordering check in page_validate() may fail on pages
containing non-binary data.
Instead, let the callers of page_zip_decompress() invoke page_validate()
when the index information is available.
with page_zip_dir_insert(). Pass page_zip to rec_set_n_owned_new()
and page_dir_slot_set_n_owned().
page_zip_dir_insert(): New function. Shift the dense page directory and
write the inserted record there.
data0data.c: Add #include "page0zip.h" that was forgotten from r739.
page_cur_insert_rec_low(): Remove a memory leak when preventing
extra_size to grow.
with page_zip_available() in order to avoid an extra page_zip_compress().
page_zip_available(): Make the function public.
page0zip.ic: Sort the inline function declarations in order to avoid
forward references, which do not work on some compilers.
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_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.
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.
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.
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.
operations on BLOB columns. There are some bugs in the code, because
test-insert and a few other tests fail.
page_mem_free(): Add parameter index. Decrement PAGE_N_RECS here.
Move some operations to page_zip_dir_delete().
page_zip_clear_rec(): Make this a static function.
page_zip_dir_delete(): Add parameters index and offsets.
Decrement PAGE_N_RECS and clear info_bits and n_owned.
page_zip_get_n_prev_extern(): Correct the synopsis and the algorithm.
Add parameter page_zip. Search the records in heap_no order instead
of collation order.
page_zip_compress(), page_zip_decompress(): Only copy BLOB pointers
and increment n_blobs for records that have not been deleted.
page_zip_clear_rec(): Clear trx_id and roll_ptr on the compressed page.
page_zip_dir_delete(): Decrement PAGE_N_RECS. Shift the array of
BLOB pointers. Call page_zip_clear_rec().
page_zip_dir_add_slot(): Shift the array of BLOB pointers to make
space of roll_ptr and trx_id.
page_cur_delete_rec(): Do not decrement PAGE_N_RECS or call
page_zip_clear_rec(), as page_mem_free() already does it.
page_zip_dir_delete() will need to handle BLOBs.
rec_set_field_extern_bits(), rec_set_field_extern_bits_new():
Add parameter offsets.
rec_offs_set_nth_extern(): New function to set an extern bit in offsets.
This will be called when an extern bit is set in a record.
page_cur_rec_insert(), page_cur_insert_rec_low(): Document that the
parameter "offsets" is in/out.
page_zip_dir_delete(): Note that the array of BLOB pointers will need
to be shifted.
page0zip.ic: Document the entry type for clearing a record.
page_zip_available(): Add parameter "index". Remove parameters
"is_leaf" and "is_clustered".
page_zip_get_trailer_len(): New function for computing the trailer length
of the compressed page.
page_zip_apply_log(): Implement the modification log entry type for
clearing the data bytes of a record.
page_zip_decompress(): Initialize n_blobs when actually copying the
BLOB pointers to place.
page_zip_validate(): Add diagnostic messages for failures. Check
also m_start, m_end, and n_blobs.
page_zip_write_blob_ptr(): Add page_zip_validate() assertion.
There are still some bugs in the code.
btr_store_big_rec_extern_fields(): Remove assertion on dict_table_is_zip()
to ease testing.
btr_free_externally_stored_field(): Test page_zip instead of
dict_table_is_zip().
page_zip_write_rec(): Add parameter "create". Try to handle externally
stored columns.
rec_offs_any_extern(): Correct the function comment.
Add rec_offs_n_extern() and page_zip_get_n_prev_extern().
page_zip_dir_decode(): Replace assertion with if (...) return(FALSE).
page_zip_decompress(): Do not clear page_zip->n_blobs after counting the
BLOBs.
page_zip_write_blob_ptr(): Use page_zip_get_n_prev_extern().
Correct an off-by-one error in memcpy().
btr_compress(): Pass the correct page_zip to btr_node_ptr_set_child_page_no().
page_mem_free(): Remove parameter mtr. Do not call page_zip_clear_rec() here.
page_cur_delete_rec(): Call page_zip_clear_rec() here. Decrement PAGE_N_RECS
only after calling page_mem_free(). Assert page_zip_validate().
of clustered indexes. Previously, parts of the code assumed that these
columns would exist on all leaf pages. Simplify the update-in-place of
these columns.
Add inline function dict_index_is_clust() to replace all tests
index->type & DICT_CLUSTERED.
Remove the redo log entry types MLOG_ZIP_WRITE_TRX_ID and
MLOG_ZIP_WRITE_ROLL_PTR, because the modifications to these columns
are covered by logical logging.
Fuse page_zip_write_trx_id() and page_zip_write_roll_ptr() into
page_zip_write_trx_id_and_roll_ptr().
page_zip_dir_add_slot(), page_zip_available(): Add flag "is_clustered",
so that no space will be reserved for TRX_ID and ROLL_PTR on leaf pages
of secondary indexes.
page_zip_apply_log(): Flag an error when val==0 is encoded with two bytes.
page_zip_write_rec(): Add debug assertions that there is enough space
available for the entry before copying the data bytes of the record.
btr_root_raise_and_insert(): Because btr_page_set_level() must not
change level from non-zero to zero on compressed pages, invoke
btr_page_set_level() with page_zip==NULL and compress the entire
root page after creating it from the scratch.
btr_attach_half_pages(): Simplify the computation of lower_page_zip
and upper_page_zip. Invoke btr_node_ptr_set_child_page_no() with
the correct page_zip.
page0page.h: Add __attribute__((const)) to functions testing for
infimum or supremum.
page_zip_dir_delete(): Note that the third parameter may be NULL.
Correct offset errors.
page_zip_available(): Use n_heap instead of n_recs.
page_zip_dir_find(), page_zip_dir_find_free(): Fix off-by-one error.
page_zip_fields_encode(), page_zip_fields_decode(): Encode and decode
index->n_nullable for non-leaf pages.
page_zip_apply_log(): Write REC_NEW_HEAP_NO before calling
rec_offs_make_valid().
page_zip_write_node_ptr(): Correct off-by-one error.
page_cur_search_with_match(): Make use of page_is_leaf().
page_dir_add_slots(): Replaced with page_dir_add_slot(). Use memmove().
row_upd_rec_in_place(), page_zip_write_rec(): Add parameter "index".
page_dir_set_n_heap(): Add a debug assertion that on compressed
pages, n_heap will always be incremented by one. Improve code formatting.
page_zip_dir_add_slot(): New function, called from
page_cur_insert_rec_low() after page_mem_alloc_heap().
rec_set_n_owned_new(): Do not call page_zip_rec_set_owned()
on the supremum record.
rec_offs_make_valid(): Add debug assertions.
page_zip_dir_user_size(): Correct an off-by-one error in the debug assertion.
page_zip_apply_log(): Add parameter trx_id_col. Skip trx_id and roll_ptr.
page_zip_decompress(): Simplify the handling of "storage" in the loop that
copies the uncompressed fields.
page_zip_write_rec(): Store trx_id and roll_ptr separately.
page_zip_write_trx_id(), page_zip_write_roll_ptr(): Fix off-by-one errors.
page_cur_insert_rec_low(): Call page_zip_dir_add_slot() after
page_mem_alloc_heap(). Remove some redundant assertions.
Pass page_zip to page_dir_split_slot().
on a compressed page.
page_zip_get_n_relocated(), page_zip_set_n_relocated(),
page_zip_get_relocated(): Remove.
page0zip.c, page0zip.ic: Remove all references to n_relocated.
page_cur_insert_rec_low(): On pages that are compressed,
never relocate records that are allocated from the free list.
do not allow extra_size to decrease on compressed pages.
Split page_mem_alloc() to page_mem_alloc_free() and page_mem_alloc_heap().
page_cur_insert_rec_low(): Remove parameter "tuple". Implement some of the
logic from page_mem_alloc().
page_cur_tuple_insert(): Convert the tuple to a record and calculate offsets.
page_zip_validate(): Assert that the page is in compact format.
compressed pages.
btr_root_raise_and_insert(): Distinguish root_page_zip and new_page_zip.
btr_cur_set_ownership_of_extern_field(): Do not log the write on the
uncompressed page if it will be logged for page_zip.
lock_rec_insert_check_and_lock(), lock_sec_rec_modify_check_and_lock():
Update the max_trx_id field also on the compressed page.
mlog_write_ulint(): Add UNIV_UNLIKELY hints. Remove trailing white space.
mlog_log_string(): Remove trailing white space.
rec_set_field_extern_bits(): Remove parameter mtr, as the write will either
occur in the heap, or it will be logged at a higher level.
recv_parse_or_apply_log_rec_body(),
page_zip_write_header(): Add log record type MLOG_ZIP_WRITE_HEADER.
page_header_set_field(): Pass mtr=NULL to page_zip_write_header().
page_header_reset_last_insert(): Pass mtr to page_zip_write_header().
btr_page_set_index_id(), btr_page_set_level(),
btr_page_set_next(), btr_page_set_prev(): Pass mtr to page_zip_write_header().
row_upd_rec_sys_fields(): Pass mtr=NULL to page_zip_write_trx_id() and
page_zip_write_roll_ptr(), since the write will be logged at a higher level.
page_zip_write_header(): Add parameter mtr.
page_zip_write_header_log(): New function.
Remove rec_set_nth_field_extern_bit().
Make rec_set_nth_field_extern_bit_old() static.
Rename rec_set_nth_field_extern_bit_new()
to rec_set_field_extern_bits_new() and make it static.
row_ins_index_entry_low(): Remove bogus TODO comment.
