- Full table scan internally uses LIMIT n, and re-starts the scan from
the last seen rowkey value. rowkey ranges are inclusive, so we will
see the same rowkey again. We should ignore it.
- We use HA_MRR_NO_ASSOC ("optimizer_switch=join_cache_hashed") mode
- Not able to use BKA's buffers yet.
- There is a variable to control batch size
- There are status counters.
- Nedeed to make some fixes in BKA code (to be checked with Igor)
Following reasons caused mismatches:
- different handling of invalid values;
- different CAST results with fractional seconds;
- microseconds support in MariaDB;
- different algorithm of comparing temporal values;
- differences in error and warning texts and codes;
- different approach to truncating datetime values to time;
- additional collations;
- different record order for queries without ORDER BY;
- MySQL bug#66034.
More details in MDEV-369 comments.
make CMakeLists.txt to detect if the installed boost can be compiled with the
installed compile and specified set of compiler options.
Background: even sufficiently new Boost cannot be compiled with the sufficiently old gcc
in the presence of -fno-rtti
mysql_rm_table_no_locks() function was modified.
When we construct log record for the DROP TABLE, now we
look if there's a comment before the first table name and
add it to the record if so.
per-file comments:
sql/sql_table.cc
MDEV-340 Save replication comments for DROP TABLE.
comment_length() function implemented to find comments in the query,
call it in mysql_rm_table_no_locks() and use the result to form log record.
mysql-test/suite/binlog/r/binlog_drop_if_exists.result
MDEV-340 Save replication comments for DROP TABLE.
test result updated.
mysql-test/suite/binlog/t/binlog_drop_if_exists.test
MDEV-340 Save replication comments for DROP TABLE.
test case added.
Following reasons caused mismatches:
- different handling of invalid values;
- different CAST results with fractional seconds;
- microseconds support in MariaDB;
- different algorithm of comparing temporal values;
- differences in error and warning texts and codes;
- different approach to truncating datetime values to time;
- additional collations;
- different record order for queries without ORDER BY;
- MySQL bug#66034.
More details in MDEV-369 comments.
- index_merge/intersection is unable to work on GIS indexes, because:
1. index scans have no Rowid-Ordered-Retrieval property
2. When one does an index-only read over a GIS index, they do not
get the index tuple, because index only contains bounding box of the geometry.
This is why key_copy() call crashed.
This patch fixes#1, which makes the problem go away. Theoretically, it would
be nice to check #2, too, but SE API semantics is not sufficiently precise to do it.
Now partition engine adds underlying tables to the QC and ask underlying tables engine permittion to cache the query and return result of the query.
Incorrect QC cleanup in case of table registration failure fixe.
Unified interface for myisammrg & partitioned engnes for QC.
- Better error messages
This fixes that one again can run the test systems with many threads without having to increase fs.aio-max-nr.
mysql-test/include/mtr_check.sql:
Ignore the INNODB_USE_NATIVE_AIO variable (may change during execution)
mysql-test/mysql-test-run.pl:
Ignore warnings for failure to setup AIO
storage/innobase/os/os0file.c:
Continue without AIO even if we can't allocate resources for AIO
storage/xtradb/os/os0file.c:
Continue without AIO even if we can't allocate resources for AIO
storage/xtradb/srv/srv0start.c:
Give an error message (instead of core dump) if AIO can't be initialized
