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().
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().
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.
Fix the way how btr_free_externally_stored_field() is called in purge.
btr_free_externally_stored_field(): Add parameter field_ref that points
directly to the BLOB reference. Use rec, offsets, page_zip, and i
only for the page_zip_write_blob_ptr() call.
row_purge_upd_exist_or_extern(): Do not assume that the undo log contains
the entire record. Only pass the BLOB reference to
btr_free_externally_stored_field().
btr_cur_pessimistic_insert(): Pass the "extern storage" flags to
btr_root_raise_and_insert() or btr_page_split_and_insert().
btr_copy_externally_stored_field(): Include local_len in the returned length.
btr_cur_optimistic_insert(): Replace page_cur_insert_rec_low()
with page_cur_tuple_insert().
btr_cur_pessimistic_update(): Add the columns of big_rec_vec to ext_vect,
so that the "extern storage" bits will be set correctly in
btr_cur_insert_if_possible().
This has not been extensively tested yet, because some other part of the
code breaks in "ibtestblob".
btr_free_page_low(): Add parameters "space" and "page_no", because they
are omitted from compressed BLOB pages.
btr0cur.c: Implement the compression and decompression of BLOB columns,
enabled at compile-time (#define ZIP_BLOB TRUE) for now.
btr_rec_free_externally_stored_fields(),
btr_copy_externally_stored_field(): Made static
mlog_log_string(): New function, split from mlog_write_string(), allows
to avoid a dummy memcpy() of compressed BLOB pages.
flag of records. The flags may only be updated in heap-allocated
copies of records.
btr_root_raise_and_insert(),
btr_page_split_and_insert(),
btr_cur_insert_if_possible(),
btr_cur_optimistic_insert(),
btr_cur_pessimistic_insert(),
page_cur_tuple_insert(),
page_cur_insert_rec_low(): Add parameters "ext" and "n_ext".
dtuple_convert_big_rec(): Make parameter "ext" const.
BLOB pointers, trx_id, and roll_ptr.
btr_empty(), btr_create(), page_create(): Add parameter "index", as some
index information will be encoded on the compressed page.
Define REC_NODE_PTR_SIZE as 4.
Allow btr_page_reorganize() and btr_page_reorganize_low() to fail.
Define the error code DB_ZIP_OVERFLOW.
Make row_ins_index_entry_low() static.
page0zip: Encode the index, log reorganized records, and store uncompressed
fields separately from the compressed data stream.
page_set_max_trx_id(), page_update_max_trx_id(): Add parameter page_zip.
Check that page_zip_decompress() is never called after modifying the
header or trailer of the compressed page, i.e., that page_zip_decompress()
will restore the uncompressed page as it was before the failed operation.
Implement page_zip_write_header().
Add page_zip parameter to btr_page_set_ functions.
Allow page_copy_rec_list_end() to be called with invalid new_page_zip
if the page has been newly created.
