The UPDATE statement wrote NULL when the column set is DATETIME and
value is '0000-00-00 00:00:00'. The problem was inside WriteEngine's
handling of UPDATE statements and this is where heart of change is.
Other changes are related to some obsolete data structures in DML/DDL
handling that just hanging around there, doing nothing.
Remove redundant cast.
As C-style casts with a type name in parantheses are interpreted as static_casts this literally just changes the interpretation around (and forces an implicit cast to match the return value of the function).
Switch UBIGINTNULL and UBIGINTEMPTYROW constants for consistency.
Make consistent with relation between BIGINTNULL and BIGINTEMPTYROW & make adapted cast behaviour due to NULL markers more intuitive. (After this change we can simply block the highest possible uint64_t value and if a cast results in it, print the next lower value (2^64 - 2). Previously, (2^64 - 1) was able to be printed, but (2^64 - 2) as being blocked by the UBIGINTNULL constant was not, making finding the appropiate replacement value to give out more confusing.
Introduce MAX_MCS_UBIGINT and MIN_MCS_BIGINT and adapt casts.
Adapt casting to BIGINT to remove NULL marker error.
Add bugfix regression test for MCOL 4632
Add regression test for mcol_4648
Revert "Switch UBIGINTNULL and UBIGINTEMPTYROW constants for consistency."
This reverts commit 83eac11b18937ecb0b4c754dd48e4cb47310f620.
Due to backwards compatability issues.
Refactor casting to MCS[U]Int to datatype functions.
Update regression tests to include other affected datatypes.
Apply formatting.
Refactor according to PR review
Remove redundant new constant, switch to using already existing constant.
Adapt nullstring casting to EMPTYROW markers for backwards compatability.
Adapt tests for backward compatability behaviour allowing text datatypes to be casted to EMPTYROW constant.
Adapt mcol641-functions test according to bug fix.
Update tests according to new expected behaviour.
Adapt tests to new understanding of issue.
Update comments/documentation for MCOL_4632 test.
Adapt to new cast limit logic.
Make bracketing consistent.
Adapt previous regression test to new expected behaviour.
* Fixes of bugs from ASAN warnings, part one
* MQC as static library, with nifty counter for global map and mutex
* Switch clang to 16
* link messageqcpp to execplan
- occured -> occurred
- reponse -> response
- seperated -> separated
All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the
BSD-new license. I am contributing on behalf of my employer Amazon Web
Services, Inc.
* Fix clang warnings
* Remove vim tab guides
* initialize variables
* 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length
* Fix ISO C++17 does not allow 'register' storage class specifier for outdated bison
* chars are unsigned on ARM, having if (ival < 0) always false
* chars are unsigned by default on ARM and comparison with -1 if always true
Part 1:
As part of MCOL-3776 to address synchronization issue while accessing
the fTimeZone member of the Func class, mutex locks were added to the
accessor and mutator methods. However, this slows down processing
of TIMESTAMP columns in PrimProc significantly as all threads across
all concurrently running queries would serialize on the mutex. This
is because PrimProc only has a single global object for the functor
class (class derived from Func in utils/funcexp/functor.h) for a given
function name. To fix this problem:
(1) We remove the fTimeZone as a member of the Func derived classes
(hence removing the mutexes) and instead use the fOperationType
member of the FunctionColumn class to propagate the timezone values
down to the individual functor processing functions such as
FunctionColumn::getStrVal(), FunctionColumn::getIntVal(), etc.
(2) To achieve (1), a timezone member is added to the
execplan::CalpontSystemCatalog::ColType class.
Part 2:
Several functors in the Funcexp code call dataconvert::gmtSecToMySQLTime()
and dataconvert::mySQLTimeToGmtSec() functions for conversion between seconds
since unix epoch and broken-down representation. These functions in turn call
the C library function localtime_r() which currently has a known bug of holding
a global lock via a call to __tz_convert. This significantly reduces performance
in multi-threaded applications where multiple threads concurrently call
localtime_r(). More details on the bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=16145
This bug in localtime_r() caused processing of the Functors in PrimProc to
slowdown significantly since a query execution causes Functors code to be
processed in a multi-threaded manner.
As a fix, we remove the calls to localtime_r() from gmtSecToMySQLTime()
and mySQLTimeToGmtSec() by performing the timezone-to-offset conversion
(done in dataconvert::timeZoneToOffset()) during the execution plan
creation in the plugin. Note that localtime_r() is only called when the
time_zone system variable is set to "SYSTEM".
This fix also required changing the timezone type from a std::string to
a long across the system.
Create tables and schemas with lower case name only if the flag is set.
During operations, convert to lowercase in plugin. Byt the time a query gets to ExeMgr, DDLProc etc., everything must be lower case if the flag is set, and undisturbed if not.
when a non-existing table is dropped.
This patch accomodates the changes made to server 10.5 as part
of MDEV-11412, where the server now tries to drop the table from
all storage engines when a .frm table does not exist.
We were earlier retuning a warning to the client and setting the
return code to 0. We now instead return ER_NO_SUCH_TABLE_IN_ENGINE
error code to the server if the table does not exist in
ColumnStore.
Rename packages to MariaDB-columnstore-engine, MariaDB-columnstore-libs
and MariaDB-columnstore-platform.
Also add the "columnstore-" prefix the the components so that MariaDB's
packaging system understands then and add a line to include them in
MariaDB's packaging.
In addition
* Fix S3 building for dist source build
* Fix Debian 10 dependency issue
* Fix git handling for dist builds
* Add support for MariaDB's RPM building
* Use MariaDB's PCRE and readline
* Removes a few dead files
* Fix Boost noncopyable includes
Intro* INSERT statements could face a non-existant block when MCOL-498 feature
is enabled. writeRow() guard blocks was supposed to proactively create empty
blocks. The pre-patch logic failed when first value in the block has been
removed by DELETE and this overwrites the whole valid block with empty magics.
This patch moves proactive creation logic into allocRowId().
A major upgrade (1.1 -> 1.2 for example) may have issues due to stale
FRM table IDs. This commit adds a stored procedure that changes the
table comment to empty on every ColumnStore table to repair the IDs.
The user should run this as part of the upgrade procedure between major
versions.
CHANGE COLUMN was blocked for TEXT and BLOB types. This fix applies to
things like TINYTEXT as well as the only difference internally is the
column width.
