Also, implement MDEV-11027 a little differently from 5.5 and 10.0:
recv_apply_hashed_log_recs(): Change the return type back to void
(DB_SUCCESS was always returned).
Report progress also via systemd using sd_notifyf().
Also, implement MDEV-11027 a little differently from 5.5:
recv_sys_t::report(ib_time_t): Determine whether progress should
be reported.
recv_apply_hashed_log_recs(): Rename the parameter to last_batch.
my_readline can fail due to missing file. Make my_readline report this
condition separately so that we can catch it and report an appropriate
error message to the user.
it was race condition prone. instead use either a pair of my_delete()
calls with already resolved paths, or a safe high-level function
my_handler_delete_with_symlink(), like MyISAM and Aria already do.
TOCTOU bug. The path is checked to be valid, symlinks are resolved.
Then the resolved path is opened. Between the check and the open,
there's a window when one can replace some path component with a
symlink, bypassing validity checks.
Fix: after we resolved all symlinks in the path, don't allow open()
to resolve symlinks, there should be none.
Compared to the old MyISAM/Aria code:
* fastpath. Opening of not-symlinked files is just one open(),
no fn_format() and lstat() anymore.
* opening of symlinked tables doesn't do fn_format() and lstat() either.
it also doesn't to realpath() (which was lstat-ing every path
component), instead if opens every path component with O_PATH.
* share->data_file_name stores realpath(path) not readlink(path). So,
SHOW CREATE TABLE needs to do lstat/readlink() now (see ::info()),
and certain error messages (cannot open file "XXX") show the real
file path with all symlinks resolved.
- Used same fix as for MyISAM: High level collation byte stored in unused
bit_end position.
- Moved language from header to base_info
- Removed unused bit_end part in HA_KEY_SEG
The crash is caused due to a race condition where wsrep
startup threads invoke ha_maria::implicit_commit() method
while maria_hton is partially initialized. The fix is to
skip this method if plugins are uninitialized.
Fixed wrong calculation of buffer sizes. ulong datatype was used wrongly,
as were the casts to ulong. Buffer sizes should be of type size_t,
not ulong, or bad things happen on 64 bit Windows.
This patch changes pagecache struct to use size_t/ssize_t
where long/ulong were previously used. Also, removed several casts.
Both aria and myisam storage engines feature a logic path in
thr_find_all_keys that leads to undefined behaviour by bypassing the
initialization code of variables after my_thread_init().
By refactoring the nested logic into a separate function, this problem
is resolved.
Aria service threads are created "joinable", but they're not "joined" on
completion. This causes memory leaks around thread local storage.
Fixed by joining service thread. Simplified relevant code and cleaned up
relevant valgrind suppressions.
Problem was that insert-order (enforced by the optimizer) did not handle
the case where the bitmap changed to a new one.
Fixed by remembering the last bitmap page used and to force usage of this when inserting new rows
Due to a hack that has propagated to the maria storage engine, undefined
behaviour would result by bypassing the initialization code of variables
after my_thread_init().
By refactoring the nested logic into a separate function, this problem
is resolved.
OPTIMIZE TABLE against MyISAM/Aria table may fail and leave stale temporary file
if mysql_file_create() returns 0 file descriptor. This was due to wrong
condition, which considered 0 as failure.
5.5 doesn't have fix for MDEV-5679, thus 0 file descriptor is always occupied
by stdin and this bug is not reproducible.
10.1 has fix for MDEV-8475, which hides this bug.
No test case since it mostly depends on how OS returns file descriptors.
This includes fixing all utilities to not have any memory leaks,
as safemalloc warnings stopped tests from passing on MacOSX.
- Ensure that all clients takes character-set-dir, as the
libmysqlclient library will use it.
- mysql-test-run now passes character-set-dir to all external clients.
- Changed dynstr_free() so that it can be called twice (made freeing code easier)
- Changed rpl_global_gtid_slave_state to be allocated dynamicly as it
includes a mutex that needs to be initizlied/destroyed before my_end() is called.
- Removed rpl_slave_state::init() and rpl_slave_stage::deinit() as
their job are better handling by constructor and delete.
- Print alias instead of table_name in check_duplicate_key as
table_name may have been converted to lower case.
Other things:
- Fixed a case in time_to_datetime_with_warn() where we where
using && instead of & in tests
Fixed failure in tests when running optimized code
- Some assert() was using code that had to be executed
Fixed copying of some uninitialized data (fixed valgrind warning)
Instead of encrypt(src, dst, key, iv) that encrypts all
data in one go, now we have encrypt_init(key,iv),
encrypt_update(src,dst), and encrypt_finish(dst).
This also causes collateral changes in the internal my_crypt.cc
encryption functions and in the encryption service.
There are wrappers to provide the old all-at-once encryption
functionality. But binlog events are often written piecewise,
they'll need the new api.
Issue was two fold (both in MyISAM and Aria)
- optimize and repair failed if there was an old .TMM file around. As optimized and repair are protected against multiple execution, I decided to change so that we just truncate the file if it exists.
- I had missed to check for error condition if creation of the temporary index file failed. This caused the strange behaviour that it looked as if optimized would have worked once.
of more than 45G with a key_cache_block_size of 1024 or less.
The problem was that some of the arguments to my_multi_malloc() got to be
more than 4G.
Fix:
- Inntroduced my_multi_malloc_large() that can handle big regions.
- Changed MyISAM and Aria key caches to use my_multi_malloc_large().
I didn't change the default my_multi_malloc() as this would be a too big
patch and we don't allocate 4G blocks anywhere else.