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now we can afford it. Fix -Werror errors. Note:
* old gcc is bad at detecting uninit variables, disable it.
* time_t is int or long, cast it for printf's
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The MDEV-17262 commit 26432e49d37a37d09b862bb49a021e44bdf4789c
was skipped. In Galera 4, the implementation would seem to require
changes to the streaming replication.
In the tests archive.rnd_pos main.profiling, disable_ps_protocol
for SHOW STATUS and SHOW PROFILE commands until MDEV-18974
has been fixed.
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There were two newly enabled warnings:
1. cast for a function pointers. Affected sql_analyse.h, mi_write.c
and ma_write.cc, mf_iocache-t.cc, mysqlbinlog.cc, encryption.cc, etc
2. memcpy/memset of nontrivial structures. Fixed as:
* the warning disabled for InnoDB
* TABLE, TABLE_SHARE, and TABLE_LIST got a new method reset() which
does the bzero(), which is safe for these classes, but any other
bzero() will still cause a warning
* Table_scope_and_contents_source_st uses `TABLE_LIST *` (trivial)
instead of `SQL_I_List<TABLE_LIST>` (not trivial) so it's safe to
bzero now.
* added casts in debug_sync.cc and sql_select.cc (for JOIN)
* move assignment method for MDL_request instead of memcpy()
* PARTIAL_INDEX_INTERSECT_INFO::init() instead of bzero()
* remove constructor from READ_RECORD() to make it trivial
* replace some memcpy() with c++ copy assignments
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Temporarily disable a test for
commit 2175bfce3e9da8332f10ab0e0286dc93915533a2
because fixing it in 10.2 requires updating libmariadb.
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This is joint work with Oleksandr Byelkin.
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Fix the off-by-one overflow which was introduced with commit
b0fd06a6f2721 (MDEV-15670 - unit.my_atomic failed in buildbot with
Signal 11 thrown)
Closes #1098.
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The problem was originally stated in
http://bugs.mysql.com/bug.php?id=82212
The size of an base64-encoded Rows_log_event exceeds its
vanilla byte representation in 4/3 times.
When a binlogged event size is about 1GB mysqlbinlog generates
a BINLOG query that can't be send out due to its size.
It is fixed with fragmenting the BINLOG argument C-string into
(approximate) halves when the base64 encoded event is over 1GB size.
The mysqlbinlog in such case puts out
SET @binlog_fragment_0='base64-encoded-fragment_0';
SET @binlog_fragment_1='base64-encoded-fragment_1';
BINLOG @binlog_fragment_0, @binlog_fragment_1;
to represent a big BINLOG.
For prompt memory release BINLOG handler is made to reset the BINLOG argument
user variables in the middle of processing, as if @binlog_fragment_{0,1} = NULL
is assigned.
Notice the 2 fragments are enough, though the client and server still may
need to tweak their @@max_allowed_packet to satisfy to the fragment
size (which they would have to do anyway with greater number of
fragments, should that be desired).
On the lower level the following changes are made:
Log_event::print_base64()
remains to call encoder and store the encoded data into a cache but
now *without* doing any formatting. The latter is left for time
when the cache is copied to an output file (e.g mysqlbinlog output).
No formatting behavior is also reflected by the change in the meaning
of the last argument which specifies whether to cache the encoded data.
Rows_log_event::print_helper()
is made to invoke a specialized fragmented cache-to-file copying function
which is
copy_cache_to_file_wrapped()
that takes care of fragmenting also optionally wraps encoded
strings (fragments) into SQL stanzas.
my_b_copy_to_file()
is refactored to into my_b_copy_all_to_file(). The former function
is generalized
to accepts more a limit argument to constraint the copying and does
not reinitialize anymore the cache into reading mode.
The limit does not do any effect on the fully read cache.
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json_locate_key() implemented.
get rid of 'key_len' argument in functions.
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json_t unittest added.
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JSON api implementations and tests pushed.
sql_acl.cc fixed with the new function names.
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Workaround glibc bug: https://sourceware.org/bugzilla/show_bug.cgi?id=20116
by making unittest threads joinable. It makes code better anyway.
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This reverts commit d39629f01ebdd5b89186e6c8a4a8d3dd528bd26a.
Because running mtr for many hours with no output whatsoever
is not really what we should do.
And in 5.5 `make test` just works anyway, nothing to fix here.
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Assign all tests added via MY_ADD_TEST to a bogus default_ignore target,
so that they are not ran by default when doing bare make test. Add default
test named MTR that calls mysql-test-run suite, which is now the single
test run by make test.
In consequence, modified unit/suite.pm to exclude the MTR test and run the
real ctests flagged for default_ignore target, thus no circular
loop.
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main.derived_cond_pushdown: Move all 10.3 tests to the end,
trim trailing white space, and add an "End of 10.3 tests" marker.
Add --sorted_result to tests where the ordering is not deterministic.
main.win_percentile: Add --sorted_result to tests where the
ordering is no longer deterministic.
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which did not always correctly simulated io-cache::end_of_file.
The error was caused by implicit cast to unsigned of an intemediate term
in a formula.
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According to logs analysis the Dump thread attempted to read again data which
was already sent. The reason of regressed read turns out in an _my_b_cache_read()
early exit branch which missed to distinguish between total zero size read (e.g
ineffective read when Count argument is zero) from a case when the
requested amount of data is fully read out by sole accessing the cache's
file. In the latter case such then *effective* reading was not
reflected in the cache's state to screw the cache's state.
Fixed with a check introduced of whether the file reading was effective prior to
early exit. When this is the case conduct standard cache state change to
account the actual read size.
Notice the bug can show up also as an error to read binlog event e.g
through BINLOG_GTID_POS() (of MDEV-16886).
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extra/mariabackup/fil_cur.cc:361:42: warning: format specifies type 'unsigned long' but the argument has type 'ib_int64_t' (aka 'long long') [-Wformat]
extra/mariabackup/fil_cur.cc:376:9: warning: format specifies type 'unsigned long' but the argument has type 'ib_int64_t' (aka 'long long') [-Wformat]
sql/handler.cc:6196:45: warning: format specifies type 'unsigned long' but the argument has type 'wsrep_trx_id_t' (aka 'unsigned long long') [-Wformat]
sql/log.cc:1681:16: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
sql/log.cc:1687:16: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
sql/wsrep_sst.cc:1388:86: warning: format specifies type 'long' but the argument has type 'wsrep_seqno_t' (aka 'long long') [-Wformat]
sql/wsrep_sst.cc:232:86: warning: format specifies type 'long' but the argument has type 'wsrep_seqno_t' (aka 'long long') [-Wformat]
storage/connect/filamdbf.cpp:450:47: warning: format specifies type 'short' but the argument has type 'int' [-Wformat]
storage/connect/filamdbf.cpp:970:47: warning: format specifies type 'short' but the argument has type 'int' [-Wformat]
storage/connect/inihandl.cpp:197:16: warning: address of array 'key->name' will always evaluate to 'true' [-Wpointer-bool-conversion]
storage/innobase/btr/btr0scrub.cc:151:17: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
storage/innobase/buf/buf0buf.cc:5085:8: warning: nonnull parameter 'bpage' will evaluate to 'true' on first encounter [-Wpointer-bool-conversion]
storage/innobase/fil/fil0crypt.cc:2454:5: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
storage/innobase/handler/ha_innodb.cc:18685:7: warning: format specifies type 'unsigned long' but the argument has type 'wsrep_trx_id_t' (aka 'unsigned long long') [-Wformat]
storage/innobase/row/row0mysql.cc:3319:5: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
storage/innobase/row/row0mysql.cc:3327:5: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
storage/maria/ma_norec.c:35:10: warning: implicit conversion from 'int' to 'my_bool' (aka 'char') changes value from 131 to -125 [-Wconstant-conversion]
storage/maria/ma_norec.c:42:10: warning: implicit conversion from 'int' to 'my_bool' (aka 'char') changes value from 131 to -125 [-Wconstant-conversion]
storage/maria/ma_test2.c:1009:12: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
storage/maria/ma_test2.c:1010:12: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
storage/mroonga/ha_mroonga.cpp:9189:44: warning: use of logical '&&' with constant operand [-Wconstant-logical-operand]
storage/mroonga/vendor/groonga/lib/expr.c:4987:22: warning: comparison of constant -1 with expression of type 'grn_operator' is always false [-Wtautological-constant-out-of-range-compare]
storage/xtradb/btr/btr0scrub.cc:151:17: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
storage/xtradb/buf/buf0buf.cc:5047:8: warning: nonnull parameter 'bpage' will evaluate to 'true' on first encounter [-Wpointer-bool-conversion]
storage/xtradb/fil/fil0crypt.cc:2454:5: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
storage/xtradb/row/row0mysql.cc:3324:5: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
storage/xtradb/row/row0mysql.cc:3332:5: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
unittest/sql/mf_iocache-t.cc:120:35: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat]
unittest/sql/mf_iocache-t.cc:96:35: note: expanded from macro 'INFO_TAIL'
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MDEV-7257 made a dump thread to read from binlog concurrently with
writers as long as the read bytes are below a water-mark
(MYSQL_BIN_LOG::binlog_end_pos). However it appeared to be possible a
dump thread reader reach out for bytes past the water mark through a
feature of IO_CACHE that fills in the internal buffer and while doing
so it could read what the reader is not supposed to see (the bytes
above MYSQL_BIN_LOG::binlog_end_pos).
The issue is fixed with constraining the IO_CACHE buffer fill to respect
the watermark.
An added unit test proves reading from file is bound to an external
parameter
passed to {IO_CACHE::end_of_file} cache member.
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MDEV-7257 made a dump thread to read from binlog concurrently with
writers as long as the read bytes are below a water-mark
(MYSQL_BIN_LOG::binlog_end_pos). However it appeared to be possible a
dump thread reader reach out for bytes past the water mark through a
feature of IO_CACHE that fills in the internal buffer and while doing
so it could read what the reader is not supposed to see (the bytes
above MYSQL_BIN_LOG::binlog_end_pos).
The issue is fixed with constraining the IO_CACHE buffer fill to respect
the watermark.
An added unit test proves reading from file is bound to an external
parameter
passed to {IO_CACHE::end_of_file} cache member.
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Returned accidentally removed undefinition of MYSQL_SERVER in net_serv.cc inside embedded server
(embedded server uses real_net_read/write only as a client)
Prevented attempt to clean up embedded server if it was not initialized
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Fix type mismatches in the unit test mdev10259().
btr_search_info_get_ref_count(): Do not return early if !table->space.
We can simply access table->space_id even after the tablespace has
been discarded.
btr_get_search_latch(): Relax a debug assertion to allow
!index->table->space.
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order with Galera and encrypt-tmp-files=1
Problem:- If trans_cache (IO_CACHE) uses encrypted tmp file
then on next DML server will crash.
Case:-
Lets take a case , we have a table t1 , We try to do 2 inserts in t1
1. A really long insert so that trans_cache has to use temp_file
2. Just a small insert
Analysis:- Actually server crashes from inside of galera
library.
/lib64/libc.so.6(abort+0x175)[0x7fb5ba779dc5]
/usr/lib64/galera/libgalera_smm.so(_ZN6galera3FSMINS_9TrxHandle5State...
mysys/stacktrace.c:247(my_print_stacktrace)[0x7fb5a714940e]
sql/signal_handler.cc:160(handle_fatal_signal)[0x7fb5a715c1bd]
sql/wsrep_hton.cc:257(wsrep_rollback)[0x7fb5bcce923a]
sql/wsrep_hton.cc:268(wsrep_rollback)[0x7fb5bcce9368]
sql/handler.cc:1658(ha_rollback_trans(THD*, bool))[0x7fb5bcd4f41a]
sql/handler.cc:1483(ha_commit_trans(THD*, bool))[0x7fb5bcd4f804]
but actual issue is not in galera but in mariadb, because for 2nd
insert we should never call rollback. We are calling rollback because
log_and_order fails it fails because write_cache fails , It fails
because after reinit_io_cache(trans_cache) , my_b_bytes_in_cache says 0
so we look into tmp_file for data , which is obviously wrong since temp
was used for previous insert and it no longer exist.
wsrep_write_cache_inc() reads the IO_CACHE in a loop, filling it with
my_b_fill() until it returns "0 bytes read". Later
MYSQL_BIN_LOG::write_cache() does the same. wsrep_write_cache_inc()
assumes that reading a zero bytes past EOF leaves the old data in the
cache
Solution:- There is two issue in my_b_encr_read
1st we should never equal read_end to info->buffer. I mean this
does not make sense read_end should always point to end of buffer.
2nd For most of the case(apart from async IO_CACHE) info->pos_in_file
should be equal to info->buffer position wrt to temp file , since
in this case we are not changing info->buffer it should remain
unchanged.
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