interpreter. It was only used for updating the InnoDB internal data
dictionary when renaming or dropping tables. It could have caused
deadlocks after acquiring latches on insert buffer bitmap pages.
This and r3544 should fix Issue #135.
Furthermore, the update-in-place-in-select does not account for
compression failure. That was not a problem yet, since the InnoDB SQL
interpreter has so far assumed ROW_FORMAT=REDUNDANT.
rb://63 approved by Heikki Tuuri
column of a compressed table, the BTR_EXTERN_LEN field in the BLOB pointer
will be written as 0. Tolerate this in the functions that deal with
externally stored columns. This fixes Issue #80 and was posted at rb://26.
Note that the clustered index record is always deleted or purged last,
after any secondary index records referring to it have been deleted.
btr_free_externally_stored_field(): On an uncompressed table, zero out
the BTR_EXTERN_LEN, so that half-deleted BLOBs can be detected after
crash recovery.
btr_copy_externally_stored_field_prefix(): Return 0 if the BLOB has been
half-deleted.
row_upd_ext_fetch(): Assert that the externally stored column exists.
row_ext_cache_fill(): Allow btr_copy_externally_stored_field_prefix()
to return 0.
row_sel_sec_rec_is_for_blob(): Return FALSE if the BLOB has been half-deleted.
This is correct, because the clustered index record would have been deleted
or purged last, after any secondary index records referring to it had been
deleted.
Merge 2537:2605 from branches/5.1:
------------------------------------------------------------------------
r2545 | vasil | 2008-07-25 17:24:23 +0300 (Fri, 25 Jul 2008) | 37 lines
Changed paths:
M /branches/5.1/handler/ha_innodb.cc
branches/5.1:
Fix Bug#38185 ha_innobase::info can hold locks even when called with HA_STATUS_NO_LOCK
The fix is to call fsp_get_available_space_in_free_extents() from
ha_innobase::info() only if HA_STATUS_NO_LOCK is not present in the flag
*AND*
change get_schema_tables_record() in MySQL's sql/sql_show.cc to call
::info() *without* HA_STATUS_NO_LOCK whenever a user issues SELECT FROM
information_schema.tables;
Without the change to sql/sql_show.cc this patch would lead to Bug#32440
resurfacing. I.e. delete_length would never be updated in ::info() and
will remain 0 forever, resulting in the free space not being shown
anywhere.
This is the change to sql/sql_show.cc for reference, it needs to be
committed to the MySQL repo before or at the same time with this change
to ha_innodb.cc:
--- patch begins here ---
--- sql/sql_show.cc.orig 2008-07-23 09:32:14.000000000 +0300
+++ sql/sql_show.cc 2008-07-23 09:32:19.000000000 +0300
@@ -3549,8 +3549,7 @@ static int get_schema_tables_record(THD
if(file)
{
- file->info(HA_STATUS_VARIABLE | HA_STATUS_TIME | HA_STATUS_AUTO |
- HA_STATUS_NO_LOCK);
+ file->info(HA_STATUS_VARIABLE | HA_STATUS_TIME | HA_STATUS_AUTO);
enum row_type row_type = file->get_row_type();
switch (row_type) {
case ROW_TYPE_NOT_USED:
--- patch ends here ---
Approved by: Heikki
------------------------------------------------------------------------
r2603 | marko | 2008-08-21 16:25:05 +0300 (Thu, 21 Aug 2008) | 10 lines
Changed paths:
M /branches/5.1/handler/ha_innodb.cc
M /branches/5.1/include/ha_prototypes.h
M /branches/5.1/row/row0sel.c
branches/5.1: Identify SELECT statements by thd_sql_command() == SQLCOM_SELECT
instead of parsing the query string. This fixes MySQL Bug #37885 without
us having to implement lexical analysis of SQL comments in yet another place.
thd_is_select(): A new predicate.
row_search_for_mysql(): Use thd_is_select().
Approved by Heikki.
------------------------------------------------------------------------
------------------------------------------------------------------------
r2386 | vasil | 2008-03-27 07:45:02 +0200 (Thu, 27 Mar 2008) | 22 lines
branches/5.1:
Merge change from MySQL (this fixes the failing innodb test):
ChangeSet@1.1810.3601.4, 2008-02-07 02:33:21+04:00, gshchepa@host.loc +9 -0
Fixed bug#30059.
Server handles truncation for assignment of too-long values
into CHAR/VARCHAR/TEXT columns in a different ways when the
truncated characters are spaces:
1. CHAR(N) columns silently ignore end-space truncation;
2. TEXT columns post a truncation warning/error in the
non-strict/strict mode.
3. VARCHAR columns always post a truncation note in
any mode.
Space truncation processing has been synchronised over
CHAR/VARCHAR/TEXT columns: current behavior of VARCHAR
columns has been propagated as standard.
Binary-encoded string/BLOB columns are not affected.
------------------------------------------------------------------------
r2387 | vasil | 2008-03-27 08:49:05 +0200 (Thu, 27 Mar 2008) | 8 lines
branches/5.1:
Check whether *trx->mysql_query_str is != NULL in addition to
trx->mysql_query_str. This adds more safety.
This may or may not fix Bug#35226 RBR event crashes slave.
------------------------------------------------------------------------
r2388 | vasil | 2008-03-27 14:02:34 +0200 (Thu, 27 Mar 2008) | 7 lines
branches/5.1:
Swap the order in which mysql_thd, mysql_query_str and *mysql_query_str
are checked for non-NULL.
Suggested by: Marko
------------------------------------------------------------------------
r2419 | vasil | 2008-04-23 19:08:06 +0300 (Wed, 23 Apr 2008) | 9 lines
branches/5.1:
Change the fix for Bug#32440 to show bytes instead of kilobytes in
INFORMATION_SCHEMA.TABLES.DATA_FREE.
Suggested by: Domas Mituzas <domas@mysql.com>
Approved by: Heikki
------------------------------------------------------------------------
r2420 | calvin | 2008-04-24 15:25:30 +0300 (Thu, 24 Apr 2008) | 4 lines
branches/5.1: Fix bug#29507 TRUNCATE shows to many rows effected
In InnoDB, the row count is only a rough estimate used by SQL
optimization. InnoDB is now return row count 0 for TRUNCATE operation.
------------------------------------------------------------------------
r2421 | calvin | 2008-04-24 15:32:30 +0300 (Thu, 24 Apr 2008) | 6 lines
branches/5.1: Fix bug#35537 - Innodb doesn't increment handler_update
and handler_delete
Add the calls to ha_statistic_increment() in ha_innobase::delete_row()
and ha_innobase::update_row().
------------------------------------------------------------------------
r2422 | vasil | 2008-04-24 16:00:30 +0300 (Thu, 24 Apr 2008) | 11 lines
branches/5.1:
Fix Bug#36169 create innodb compressed table with too large row size crashed
Sometimes it is possible that
row_drop_table_for_mysql(index->table_name, trx, FALSE); is invoked in
row_create_index_for_mysql() when the index object is freed so copy the
table name to a safe place beforehand and use the copy.
Approved by: Sunny
------------------------------------------------------------------------
symbols. Use it for all definitions of non-static variables and functions.
lexyy.c, make_flex.sh: Declare yylex as UNIV_INTERN, not static. It is
referenced from pars0grm.c.
Actually, according to
nm .libs/ha_innodb.so|grep -w '[ABCE-TVXYZ]'
the following symbols are still global:
* The vtable for class ha_innodb
* pars0grm.c: The function yyparse() and the variables yychar, yylval, yynerrs
The required changes to the Bison-generated file pars0grm.c will be addressed
in a separate commit, which will add a script similar to make_flex.sh.
The class ha_innodb is renamed from class ha_innobase by a #define. Thus,
there will be no clash with the builtin InnoDB. However, there will be some
overhead for invoking virtual methods of class ha_innodb. Ideas for making
the vtable hidden are welcome. -fvisibility=hidden is not available in GCC 3.
row_sel_get_clust_rec(), return if a previous version of the clustered index
record does not exist in the read view. This bug was made and found by
Heikki. It was harmless as long as the clustered index record contained
a long enough local prefix of externally stored columns, to allow secondary
index records to be built without fetching BLOBs.
InnoDB transactions should never look at a clustered index record whose
transaction identifier (DB_TRX_ID) is not visible in the transaction's
read view.
btr_rec_copy_externally_stored_field() are safe.
row_merge_copy_blobs(): Note that the table is locked during index creation.
Therefore, none of its BLOBs can be freed.
row_sel_fetch_columns(): Note that rec must be protected by a page latch.
Add const qualifier to rec.
row_sel_get_clust_rec(): Note that the clustered index record is protected
by a page latch that was acquired when the persistent cursor was positioned
and that the latch will be freed by mini-transaction commit.
row_sel_try_search_shortcut(): Check the delete-mark flag before fetching
the columns. Note that the clustered index record is protected
by a page latch that was acquired when the persistent cursor was positioned
and that the latch will be freed by mini-transaction commit.
row_sel(), row_search_for_mysql(): Note that the clustered index record
is protected by a page latch that was acquired when the persistent cursor
was positioned and that the latch will be freed by mini-transaction commit.
row_sel_field_store_in_mysql_format(): Add const qualifier to data.
row_sel_store_mysql_rec(), row_sel_push_cache_row_for_mysql():
Add const qualifier to rec. Note that rec must be protected by a page latch.
be protected from being deleted while any externally stored columns are
being fetched.
row_ext_create(),
row_upd_index_replace_new_col_vals(),
row_upd_index_replace_new_col_vals_index_pos(),
row_sel_sec_rec_is_for_blob(),
row_sel_sec_rec_is_for_clust_rec(): Note that the clustered
index record must be covered by a lock or a page latch.
row_upd_sec_index_entry(), row_upd_clust_rec_by_insert(),
row_undo_mod_upd_exist_sec(): Note that these functions probably
do not obtain an appropriate lock on the clustered index record
before fetching any externally stored columns.
Change mach_read_int_type() to return an integer type (ullint) instead
of array of bytes that later needs to be converted to an appropriate
integer type.
Approved by: Sunny
fix the bugs introduced in r1591.
row_rec_to_index_entry_low(): Clear "n_ext". Do not allow it to be NULL.
Add const qualifier to dict_index_t*.
row_rec_to_index_entry(): Add the parameters "offsets" and "n_ext".
btr_cur_optimistic_update(): Add an assertion that there are no externally
stored columns. Remove the unreachable call to btr_cur_unmark_extern_fields()
and the preceding unnecessary call to rec_get_offsets().
btr_push_update_extern_fields(): Remove the parameters index, offsets.
Only report the additional externally stored columns of the update vector.
row_build(), trx_undo_rec_get_partial_row(): Flag externally stored columns
also with dfield_set_ext().
rec_copy_prefix_to_dtuple(): Assert that there are no externally stored
columns in the prefix.
row_build_row_ref(): Note and assert that the index is a secondary index,
and assert that there are no externally stored columns.
row_build_row_ref_fast(): Assert that there are no externally stored columns.
rec_offs_get_n_alloc(): Expose the function.
row_build_row_ref_in_tuple(): Assert that there are no externally stored
columns in a record of a secondary index.
row_build_row_ref_from_row(): Assert that there are no externally stored
columns.
row_upd_check_references_constraints(): Add the parameter offsets, to
avoid a redundant call to rec_get_offsets().
row_upd_del_mark_clust_rec(): Add the parameter offsets. Remove
duplicated code.
row_ins_index_entry_set_vals(): Copy the external storage flag.
sel_pop_prefetched_row(): Assert that there are no externally stored
columns.
row_scan_and_check_index(): Copy offsets to a temporary heap across
the invocation of row_rec_to_index_entry().
offsets_[] arrays, as suggested by Vasil.
rec_offs_set_n_alloc(): Declare as a public function. Assert that
n_alloc > REC_OFFS_HEADER_SIZE.
rec_offs_get_n_alloc(): Assert that n_alloc > REC_OFFS_HEADER_SIZE.
row_mysql_read_true_varchar(), row_mysql_read_blob_ref(),
row_mysql_store_col_in_innobase_format(),
row_sel_convert_mysql_key_to_innobase(): Add const qualifiers.
row_sel_convert_mysql_key_to_innobase(): Document that the first parameter
is in/out.
Some things still fail in innodb-index.test, and there seems to be
a race condition (data dictionary lock wait) when running with --valgrind.
dfield_t: Add an "external storage" flag, dfield->ext.
dfield_is_null(), dfield_is_ext(), dfield_set_ext(), dfield_set_null():
New functions.
dfield_copy(), dfield_copy_data(): Add const qualifiers, fix in/out comments.
data_write_sql_null(): Use memset().
big_rec_field_t: Replace byte* data with const void* data.
ut_ulint_sort(): Remove.
upd_field_t: Remove extern_storage.
upd_node_t: Replace ext_vec, n_ext_vec with n_ext.
row_merge_copy_blobs(): New function.
row_ins_index_entry(): Add the parameter "ibool foreign" for suppressing
foreign key checks during fast index creation or when inserting into
secondary indexes.
btr_page_insert_fits(): Add const qualifiers.
btr_cur_add_ext(), upd_ext_vec_contains(): Remove.
dfield_print_also_hex(), dfield_print(): Replace if...else if with switch.
Observe dfield_is_ext().
introduced ib_longlong and %ll length specifier are not C89.)
row_ext_t: Change char* buf to byte* buf to avoid signedness warnings.
Change the type of all bit fields to unsigned.
rec_get_next_ptr(): Add (byte*) casts to avoid arithmetics on void*.
page_zip_decompress_clust(): Do not mix declarations and code.
Replace all page_t* parameters with buf_block_t*, and replace many
rec_t* parameters with heap_no. This eliminates also many
rec_get_heap_no() calls, which became more expensive with the
introduction of ROW_FORMAT=COMPACT in MySQL/InnoDB 5.0.3.
page_rec_get_heap_no(), lock_get_min_heap_no(): New functions.
accessors returning pointers with macros that preserve const qualifiers.
In UNIV_DEBUG builds, retain the accessors and cast away constness there.
dfield_get_type(), dfield_get_data(), dtuple_get_nth_field(),
dict_table_get_nth_col(), dict_table_get_sys_col(): Implement as macro
unless #ifdef UNIV_DEBUG.
rec_get_nth_field(): Replace with rec_get_nth_field_offs() that does not
do pointer arithmetics. Implement rec_get_nth_field() as a macro.
and modify some functions to return const pointers. Add const qualifiers
to local variable declarations or casts to remove the const qualifier
in those places where write access is needed.
with page_get_page_no() and page_get_space_id(). We want to avoid
buf_block_align() calls, and the page_no and space_id are now stamped
on the pages early on.
stored column. This is the first part of fixing Bug #22496.
btr_copy_externally_stored_field_prefix(): New function.
btr_copy_externally_stored_field(): Split to
btr_copy_externally_stored_field_prefix_low().
row_sel_sec_rec_is_for_blob(): New function, used by
row_sel_sec_rec_is_for_clust_rec() in selects via
a secondary index.
