- announce-list - monetdb.org

Announcement: New Dec2023-SP2 Bugfix release of MonetDB suite
by Sjoerd Mullender 15 Apr '24

15 Apr '24

The MonetDB Foundation is pleased to announce the Dec2023-SP2 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB Common - Threads have their own list of free bats. The list was not returned to the system when a thread exited, meaning that the free bats that were in the list would not be reused by any thread. This has been fixed. - Fixed a couple of deadlock situations, one actually observed, one never observed. ### MonetDB5 Server - Fixed interaction between mserver5 and remote mserver5 when only one of the two has 128 bit integer support. ### SQL Frontend - Fixed issue where equal column aliases were created. When those aliases were parsed on the remote side it could give crashes. ### Bug Fixes - [7469](https://github.com/MonetDB/MonetDB/issues/7469): Crash when using `CONTAINS` - [7479](https://github.com/MonetDB/MonetDB/issues/7479): MonetDB server crashes in `exp_ref` - [7490](https://github.com/MonetDB/MonetDB/issues/7490): commonTerms optimizer no longer works - [7495](https://github.com/MonetDB/MonetDB/issues/7495): Crash when simultaneously querying and updating a string column.

1 0

Announcement: New Dec2023-SP1 Bugfix release of MonetDB suite
by Sjoerd Mullender 18 Mar '24

18 Mar '24

The MonetDB Foundation is pleased to announce the Dec2023-SP1 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### - The copyright for the MonetDB software has been transferred to the newly established MonetDB Foundation, a not-for-profit foundation with the express goal of furthering the MonetDB database system. The license for the software does not change: MonetDB remains fully open source. ### Client Package - Fixed an issue where mclient wouldn't exit if the server it had connected to exited for whatever reason while the client was waiting for a query result. ### MonetDB Common - The internal hash function for floating point types has been changed. It is now no longer based on the bit representation, but on the value, meaning that +0 and -0 (yes, they both exist in floating point) now hash to the same value. - Fixed a regression where bats weren't always cleaned up when they weren't needed anymore. In particular, after a DELETE FROM table query without a WHERE clause (which deletes all rows from the table), the bats for the table get replaced by new ones, and the old, now unused, bats weren't removed from the database. ### Geom Module - We switched over to using the reentrant interface of the geos library. This fixed a number of bugs that would occur sporadically. ### SQL Frontend - performance improvement of 'startswith' and 'endswith' filter functions for join operators - The function json.isvalid(json) incorrectly returned true if the argument was null. It should return null. ### Bug Fixes - [6800](https://github.com/MonetDB/MonetDB/issues/6800): Please add information_schema (ANSI SQL norm) - [7152](https://github.com/MonetDB/MonetDB/issues/7152): Occasional dbfarm corruption upon database restart - [7390](https://github.com/MonetDB/MonetDB/issues/7390): Some MonetDB Server crashes found - [7412](https://github.com/MonetDB/MonetDB/issues/7412): MonetDB server crashes in `vscanf` - [7415](https://github.com/MonetDB/MonetDB/issues/7415): MonetDB server crashes in `HEAP_malloc` - [7416](https://github.com/MonetDB/MonetDB/issues/7416): MonetDB server crashes in `atom_get_int` - [7417](https://github.com/MonetDB/MonetDB/issues/7417): MonetDB server crashes in `trimchars`. - [7418](https://github.com/MonetDB/MonetDB/issues/7418): MonetDB server crashes in `bind_col_exp` - [7420](https://github.com/MonetDB/MonetDB/issues/7420): Performance issue with lower(string) - [7425](https://github.com/MonetDB/MonetDB/issues/7425): The last statement, execution error, is a false positive? - [7426](https://github.com/MonetDB/MonetDB/issues/7426): Unexpected result for INNER JOIN with IS NOT NULL - [7428](https://github.com/MonetDB/MonetDB/issues/7428): Unexpected result when using BETWEEN operator - [7429](https://github.com/MonetDB/MonetDB/issues/7429): Unexpected result when using `CASE WHEN` - [7430](https://github.com/MonetDB/MonetDB/issues/7430): Unexpected result when using `AND` and `IS NOT NULL` - [7431](https://github.com/MonetDB/MonetDB/issues/7431): [bug] Error code found, please confirm - [7432](https://github.com/MonetDB/MonetDB/issues/7432): MonetDB server crashes in `dameraulevenshtein` - [7433](https://github.com/MonetDB/MonetDB/issues/7433): MonetDB server crashes in `exp_atom` - [7434](https://github.com/MonetDB/MonetDB/issues/7434): MonetDB server crashes in `exp_bin` - [7435](https://github.com/MonetDB/MonetDB/issues/7435): MonetDB server crashes in `exp_copy` - [7436](https://github.com/MonetDB/MonetDB/issues/7436): MonetDB server crashes in `exp_ref` - [7437](https://github.com/MonetDB/MonetDB/issues/7437): MonetDB server crashes in `exp_values_set_supertype` - [7438](https://github.com/MonetDB/MonetDB/issues/7438): MonetDB server crashes in `exps_bind_column` - [7439](https://github.com/MonetDB/MonetDB/issues/7439): MonetDB server crashes in `exps_card` - [7440](https://github.com/MonetDB/MonetDB/issues/7440): MonetDB server crashes in `gc_col` - [7441](https://github.com/MonetDB/MonetDB/issues/7441): MonetDB server crashes in `is_column_unique` - [7442](https://github.com/MonetDB/MonetDB/issues/7442): MonetDB server crashes in `mat_join2` - [7443](https://github.com/MonetDB/MonetDB/issues/7443): MonetDB server crashes in `merge_table_prune_and_unionize` - [7444](https://github.com/MonetDB/MonetDB/issues/7444): [bug] the table cannot be created because the reserved word is incorrectly set - [7447](https://github.com/MonetDB/MonetDB/issues/7447): Unexpected result when using `BETWEEN` in `INNER JOIN` - [7448](https://github.com/MonetDB/MonetDB/issues/7448): Unexpected result when using `AND`/`OR` chain - [7450](https://github.com/MonetDB/MonetDB/issues/7450): Unexpected result when `CREATE VIEW` with `WHERE NULL` - [7451](https://github.com/MonetDB/MonetDB/issues/7451): Unexpected result when using `BETWEEN` and `CAST` - [7453](https://github.com/MonetDB/MonetDB/issues/7453): Cannot recover an msqldump - [7455](https://github.com/MonetDB/MonetDB/issues/7455): Unexpected result when using `BETWEEN` with `BOOLEAN` values - [7456](https://github.com/MonetDB/MonetDB/issues/7456): Crash when `INNER JOIN` with `VIEW` - [7457](https://github.com/MonetDB/MonetDB/issues/7457): Unexpected result when using `AND` with `INTEGER` - [7458](https://github.com/MonetDB/MonetDB/issues/7458): Unexpected result when using `SIGN` - [7461](https://github.com/MonetDB/MonetDB/issues/7461): Crash by potentially use of bad escape characters - [7462](https://github.com/MonetDB/MonetDB/issues/7462): Crash when using `BETWEEN AND` - [7465](https://github.com/MonetDB/MonetDB/issues/7465): Unexpected result when using `NULL` in `BETWEEN`

1 0

Announcement: New Dec2023 Feature release of MonetDB suite
by Sjoerd Mullender 28 Dec '23

28 Dec '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Dec2023 feature release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. The Dec2023 documentation can be found [here](https://www.monetdb.org/documentation-Dec2023/). ## Dec2023 Feature Release (11.49.1) ### - All binary packages are now signed with a new key with key fingerprint DBCE 5625 94D7 1959 7B54 CE85 3F1A D47F 5521 A603. - The ranges of merge partitions are now pushed down into the low level GDK operations, giving them a handle to sometimes execute more efficiently. - Removed the PYTHON MAP external language option, as after a fork the synchronization primitives could be in any state, leading to deadlocks. During the upgrade function definitions will fallback to the normal PYTHON language option. - Implemented direct masking for strimp construction. The strimps datastructure now keeps an array of 65K 64-bit integers that is zero everywhere except at the indexes that correspond to header pairs. The entry for the nth pair in order has the nth bit of the bitstring on. These can be used to quickly construct bitstrings. ### ODBC Driver - Corrected the output value of column CHAR_OCTET_LENGTH of ODBC functions SQLColumns() and SQLProcedureColumns(). ### MonetDB Common - Fixed a (rare) race condition between copying a bat (COLcopy) and updates happening in parallel to that same bat. This may only be an actual problem with string bats, and then only in very particular circumstances. - Introduced options wal_max_dropped, wal_max_file_age and wal_max_file_size that control the write-ahead log file rotation. - Removed function BATroles to set column names on BATs. - Removed the compiled-in limit on the number of threads that can be used. The number of threads are still limited, but the limit is dictated solely by the operating system and the availability of enough memory. - We now prevent accidental upgrades from a database without 128 bit integers to one with 128 bit integers (also known as HUGEINT) from happening. Upgrades will only be done if the server is started with the option --set allow_hge_upgrade=yes. ### Geom Module - Because recent changes to the geom module require the use of geos 3.10, the geom module is no longer available in older versions of Debian and Ubuntu. Specifically, Debian 10 and 11 (buster and bullseye) and Ubuntu 20.04 (Focal Fossa) are affected. There is no automatic upgrade available for databases that were geom enabled to databases that are not, so dump + restore is the only option (if no geom types are actually used). - Implements Rtree index in GDK layer based on librtree. The index is used in the implementation of the filter functions ST_Intersects and ST_Dwithin for geometric points. - Improves shapefile support by replacing functions SHPattach, SHPpartialimport, ahd SHPimport with SHPload. - Introduces functions ST_DistanceGeographic, ST_DwithinGeographic, ST_IntersectsGeographic, ST_CoversGeographic, ST_Collects with geodesic semantics. ST_Transform can be used to convert geodetic into geographic data using libPROJ. ### MonetDB5 Server - Removed MAL functions bat.reuse and bat.reuseMap. - The MAL functions io.import and io.export have been removed. - Removed MAL functions bat.getRole and bat.setColumn since the underlying function BATroles was removed. - Change how json is stored in the database: We now normalize json strings after parsing, removing whitespace and eliminating duplicate keys in objects. - The function json.filter now properly returns json scalars instead of wrapping them in an array. - Removed the MAL tokenizer module. It was never usable from SQL and in this form never would be. ### SQL Frontend - Introduction of table returning function `persist_unlogged(schema string, table string)` that attempts to persist data in disk if "schema"."table" is unlogged table in insert only mode. If persist attempt is successful, the count of the persisted rows is returned, otherwise the count is 0. - Added ISO/IEC 9075-11 SQL/Schemata (SQL:2011) with SQL system views: information_schema.schemata information_schema.tables information_schema.views information_schema.columns information_schema.character_sets information_schema.check_constraints information_schema.table_constraints information_schema.referential_constraints information_schema.routines information_schema.parameters information_schema.sequences For details see https://www.monetdb.org/documentation/user-guide/sql-catalog/information_sc… Most views have been extended (after the standard columns) with MonetDB specific information columns such as schema_id, table_id, column_id, etc. This simplifies filtering and joins with system tables/views in sys schema when needed. Note: MonetDB does NOT support catalog qualifiers in object names, so all the CATALOG columns in these information_schema views will always return NULL. - Added support for generated column syntax: GENERATED BY DEFAULT AS IDENTITY ... This allows the user to override the default generated sequence value during inserts. - Added SQL support for: <result offset clause> and <fetch first clause> in <query expression> ::= [ <with clause> ] <query expression body> [ <order by clause> ] [ <result offset clause> ] [ <fetch first clause> ] [ <sample clause> ] <result offset clause> ::= OFFSET <offset row count> [ {ROW|ROWS} ] <fetch first clause> ::= FETCH {FIRST|NEXT} <fetch first row count> {ROW|ROWS} ONLY ### Bug Fixes - [6933](https://github.com/MonetDB/MonetDB/issues/6933): Add support for scalar function IFNULL(expr1, expr2) - [7044](https://github.com/MonetDB/MonetDB/issues/7044): Improve error message regarding 3-level SQL names - [7261](https://github.com/MonetDB/MonetDB/issues/7261): Misleading error message - [7274](https://github.com/MonetDB/MonetDB/issues/7274): Aggregate function ST_Collect crashes mserver5 - [7376](https://github.com/MonetDB/MonetDB/issues/7376): Concurrency Issue: Second Python UDF Awaits Completion of First UDF - [7391](https://github.com/MonetDB/MonetDB/issues/7391): SQL 2023 : greatest/least functions with unlimited arguments (not only 2) - [7403](https://github.com/MonetDB/MonetDB/issues/7403): Join not recognized between two row_number() columns - [7413](https://github.com/MonetDB/MonetDB/issues/7413): MonetDB server crashes in `BATcalcbetween_intern`

1 0

Announcement: New Jun2023-SP3 Bugfix release of MonetDB suite
by Sjoerd Mullender 20 Nov '23

20 Nov '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Jun2023-SP3 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/jun2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB Common - Fixed a regression where after a while the write-ahead log files weren't being rotated, meaning from some point onwards, the newest file just kept on growing. - When saving the SQL catalog during a low-level commit, we should only save the part of the catalog that corresponds to the part of the write-ahead log that has been processed. What we did was save more, which resulted in the catalog containing references to tables and columns whose disk presence is otherwise only in the write-ahead log. - A bug was fixed where the administration of which bats were in use was interpreted incorrectly during startup, causing problems later. One symptom that has been observed was failure to startup with a message that the catalog tables could not be loaded. ### SQL Frontend - Added a missing interface function sys.timestamp_to_str with a TIMESTAMP (as opposed to TIMESTAMP WITH TIME ZONE) argument. The missing interface caused error messages being produced when the function was called with a TIMESTAMP argument, although it did give the correct result. ### Bug Fixes - [7300](https://github.com/MonetDB/MonetDB/issues/7300): Implement missing standard SQL DATE and TIMESTAMP functions - [7324](https://github.com/MonetDB/MonetDB/issues/7324): string_distance('method',str1, str2) as a generic distance function - [7409](https://github.com/MonetDB/MonetDB/issues/7409): Numpy table returning UDFs with variadic arguments - [7410](https://github.com/MonetDB/MonetDB/issues/7410): SIGSEGV cause database corruption

1 0

Announcement: New Jun2023-SP2 Bugfix release of MonetDB suite
by Sjoerd Mullender 03 Oct '23

03 Oct '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Jun2023-SP2 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/jun2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### - Fixed an installation issue on Debian and Ubuntu introduced in the last build. - Do a lot more error checking, mostly for allocation failures. More is still needed, though. - Improve performance of the ILIKE operator when the pattern contains only ASCII characters. In this case we do not need to treat any characters as UTF-8 and we can use much faster routines that perform byte comparisons. ### MonetDB Common - Fixed a number of data races (race conditions). - Fixed a reference counting problem when a BAT could nog be loaded, e.g. because of resource limitations. - Only check for virtual memory limits when creating or growing bats, not for general memory allocations. There is (still) too much code that doesn't properly handle failing allocations, so we need to avoid those as much as possible. This has mostly an effect if there are virtual memory size restrictions imposed by cgroups (memory.swap.max in cgroups v2, memory.memsw.limit_in_bytes in cgroups v1). - The low-level commit turned out to always commit every persistent bat in the system. There is no need for that, it should only commit bats that were changed. This has now been fixed. - Implemented timeout/exit checks in a bunch more operators. Long(er) running operators occasionally check whether they're taking too long (past a user-specified timeout) or whether the server is exiting. This is now done in more places. ### Bug Fixes - [7094](https://github.com/MonetDB/MonetDB/issues/7094): Drop remote tables in transactions and rollback - [7303](https://github.com/MonetDB/MonetDB/issues/7303): Improve the performance of multi-column filters - [7400](https://github.com/MonetDB/MonetDB/issues/7400): VM max memory is not check correctly for cgroups v2 - [7401](https://github.com/MonetDB/MonetDB/issues/7401): Column aliases used incorrectly in UNION subqueries - [7402](https://github.com/MonetDB/MonetDB/issues/7402): Privileges on merge table not propagated to partition tables

1 0

Announcement: New Jun2023-SP1 Bugfix release of MonetDB suite
by Sjoerd Mullender 25 Jul '23

25 Jul '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Jun2023-SP1 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/jun2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB5 Server - There is now a new option --set tablet_threads=N to limit the number of threads used for a COPY INTO from CSV file query. This option can also be set for a specific database using the monetdb command using the ncopyintothreads property. ### SQL Frontend - An upgrade that both creates a new .snapshot user and extends the sys.db_user_info table with (among others) a password column did these in such a way that the passord value for the new user was NULL. This is fixed by updating the password. ### Bug Fixes - [7388](https://github.com/MonetDB/MonetDB/issues/7388): Query results in large cross product - [7394](https://github.com/MonetDB/MonetDB/issues/7394): BBPextend: ERROR: trying to extend BAT pool beyond the limit (163840000)

1 0

Announcement: New Jun2023 Feature release of MonetDB suite
by Panagiotis Koutsourakis 29 Jun '23

29 Jun '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Jun2023 feature release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/jun2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. The Jun2023 documentation can be found [here](https://www.monetdb.org/documentation-Jun2023/). ## Jun2023 Feature Release (11.47.3) ### Client Package - The COPY INTO from file ON CLIENT was extended to also look for a relative path name relative to the file from which the query was read. This is only possible if the name of the query file is known, so when it is specified on the command line or read using the interactive \< command. ### Mapi Library - Deprecate mapi_setfilecallback() in favor of mapi_setfilecallback2() which can handle binary downloads. For the time being, the old callback still works. ### ODBC Driver - Extended Windows MonetDB ODBC Data Source setup program with option to specify a logfile to enable tracing of ODBC Driver API calls. On other platforms users can edit the odbc.ini file and add a line: logfile=/home/username/odbctrace.log When a logfile is specified it will start logging the ODBC Driver API calls to the logfile after a new connection is made via SQLConnect() or SQLDriverConnect() or SQLBrowseConnect(). Note that enabling ODBC logging will slow down the performance of ODBC applications, so enable it only for analysing ODBC Driver problems. - Enhanced SQLTables() by adding support for table type names: 'BASE TABLE', 'GLOBAL TEMPORARY' and 'LOCAL TEMPORARY' in parameter TableType. These are synonyms of: 'TABLE', 'GLOBAL TEMPORARY TABLE' and 'LOCAL TEMPORARY TABLE'. ### MonetDB5 Server - The MAL debugger code has been removed. ### SQL Frontend - Add MAX_MEMORY and MAX_WORKERS options to the ALTER USER statement - Function 'similarity(x string, y string)' marked as deprecated and will be removed in the next release. - New functionality for string matching and similarity: startswith, endswith, contains, Levenshtein distance and Jaro-Winkler similarity. The functions startswith, endswith and contains have a version where a case insentive flag can be used. Also, there are new custom join functionality for startswith, endswith, contains, Levenshtein distance and Jaro-Winkler similarity. - Renamed previous Levenshtein distance to Damerau-Levenshtein distance. - New string function that transform from UTF-8 encoding to Ascii called asciify. - Session timeout feature improvement to start evaluating from the moment the procedure is called, instead of beginning of the session. - Queries stopped with the stop procedure are now marked as 'aborted' 'finished'. - The DEBUG statement has been removed. - SQL function sys.queue() overloaded with sys.queue(username string), SYSADMIN only, allowing to filter the global queue by username or use 'ALL' to retrieve the global queue. Calling the function without arguments returns the queue for the current user. - SQL procedures sys.pause(tag bigint), sys.resume(tag bigint), sys.stop(tag bigint) overloaded with sys.pause(tag bigint, username string), sys.resume(tag bigint, username string) and sys.stop(tag bigint, username string), SYSADMIN only, allowing to pause, resume and stop query executions by TAG, USERNAME. The call without arguments is a public procedure giving access to users to pause, resume and stop their own query executions. - Added support of ODBC escape sequences syntax to SQL layer. Now all clients (including ODBC/JDBC/pymonetdb) can use them without further processing. For details on ODBC escape sequences syntax see: https://learn.microsoft.com/en-us/sql/odbc/reference/appendixes/odbc-escape… - It is no longer allowed to create a merge table or remote table or replica table or unlogged table in schema "tmp". The tmp schema is reserved for temporary objects only, such as local/global temp tables. - System views sys.dependency_tables_on_functions and dependency_views_on_functions have been extended with column: function_id. - When loading data using COPY BINARY INTO, apply default values instead of just inserting NULLs. - When loading data using COPY BINARY INTO, validate DECIMAL(prec,scale) and VARCHAR(n) column width. - When loading data using COPY BINARY INTO, string used to have their line endings converted from CR LF to LF. Do not do this, it is the responsibility of the client. - Implemented dumping binary data using COPY SELECT ... INTO BINARY <file(s)>. - Removed code for Workload Capture and Replace, including system schemas "wlc" and "wlr" and the objects in those schemas. The code was experimental, and it didn't work out. A different approach will be taken. ### Merovingian - The monetdb get, inherit, lock and release commands are extended with ‘apply-to-all’ syntax similar to related functionality: Usage: monetdb set property=value [database ...] sets property to value for the given database(s), or all Usage: monetdb inherit property [database ...] unsets property, reverting to its inherited value from the default configuration for the given database(s), or all Usage: monetdb lock [-a] database [database...] Puts the given database in maintenance mode. Options: -a locks all known databases Usage: monetdb release [-a] database [database ...] Brings back a database from maintenance mode. Options: -a releases all known databases ### Bug Fixes - [7311](https://github.com/MonetDB/MonetDB/issues/7311): Missing `REGEXP_REPLACE` function. - [7344](https://github.com/MonetDB/MonetDB/issues/7344): Database upgrade failure due to user object dependency on system procedure - [7348](https://github.com/MonetDB/MonetDB/issues/7348): Subquery inside case always evaluated - [7378](https://github.com/MonetDB/MonetDB/issues/7378): MonetDB server crashes at sql_trans_copy_key - [7379](https://github.com/MonetDB/MonetDB/issues/7379): MonetDB server 11.46.0 crashes at cs_bind_ubat - [7380](https://github.com/MonetDB/MonetDB/issues/7380): MonetDB server 11.46.0 crashes at `BLOBcmp` - [7381](https://github.com/MonetDB/MonetDB/issues/7381): MonetDB server 11.46.0 crashes at `log_create_delta` - [7382](https://github.com/MonetDB/MonetDB/issues/7382): MonetDB server 11.46.0 crashes at `gc_col` - [7383](https://github.com/MonetDB/MonetDB/issues/7383): MonetDB server 11.46.0 crashes at `list_append` - [7384](https://github.com/MonetDB/MonetDB/issues/7384): MonetDB server 11.46.0 crashes at `__nss_database_lookup` - [7386](https://github.com/MonetDB/MonetDB/issues/7386): MonetDB server 11.46.0 crashes in `rel_deps` - [7387](https://github.com/MonetDB/MonetDB/issues/7387): MonetDB server 11.46.0 crashes in `rel_sequences`

1 0

Announcement: New Sep2022-SP3 Bugfix release of MonetDB suite
by Sjoerd Mullender 08 Jun '23

08 Jun '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Sep2022-SP3 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/sep2022/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### Client Package - If the number of rows in mclient is set to 0 (using either --rows=0 option or \r0 on the mclient command line), the internal pager is used and it then uses the height of the terminal window. ### MonetDB Common - Warnings and informational messages are now sent to stdout instead of stderr, which means that monetdbd will now log them with the tag MSG instead of ERR. - Fixed parsing of the BBP.dir file when BAT ids grow larger than 2**24 (i.e. 100000000 in octal). - Fixed yet another occurrence of a missing .tailN file. This one could happen if a string bat was appended to in stages so that between appends the column was committed. If an append caused both a realloc of the tail heap because it was getting longer and a realloc because it got wider, the file might get removed before the GDK level commit happened. - When processing the WAL, if a to-be-destroyed object cannot be found, don't stop, but keep processing the rest of the WAL. - A race condition was fixed where certain write-ahead log messages could get intermingled, resulting in a corrupted WAL file. - If opening of a file failed when it was supposed to get memory mapped, an incorrect value was returned to indicate the failure, causing crashes later on. This has been fixed. - A race condition was fixed that could result in a missing tail file for a string bat (i.e. a file with .tail1, .tail2, or .tail4 extension). - When saving a bat failed for some reason during a low-level commit, this was logged in the log file, but the error was then subsequently ignored, possibly leading to files that are too short or even missing. - The write-ahead log (WAL) is now rotated a bit more efficiently by doing multiple log files in one go (i.e. in one low-level transaction). ### MonetDB5 Server - Client connections are cleaned up better so that we get fewer instances of clients that cannot connect. ### SQL Frontend - Fixed a regression introduced in the previous build: when a table is dropped in the same transaction where it was created, the data wasn't removed from disk. - When creating a hot snapshot, allow other clients to proceed, even with updating queries. - Increased the size of a variable counting the number of changes made to the database (e.g. in case more than 2 billion rows are added to a table). - Improved cleanup after failures such as failed memory allocations. - An insert into a table from which a column was dropped in a parallel transaction was incorrectly not flagged as a transaction conflict. - Fix bug where boolean NULLs were not recognized by COPY BINARY INTO ### Bug Fixes - [7360](https://github.com/MonetDB/MonetDB/issues/7360): Aggregates returning string crash - [7361](https://github.com/MonetDB/MonetDB/issues/7361): Table data is lost on DB restart, but only when a table has 2147483647 or more rows.

1 0

New MonetDB JDBC driver and JdbcClient released
by Martin van Dinther 27 Feb '23

27 Feb '23

The MonetDB team at MonetDB Solutions BV is pleased to announce a bug fix release of the MonetDB JDBC driver (monetdb-jdbc-3.3.jre8.jar) and JdbcClient CLI program (jdbcclient.jre8.jar). Besides bug fixes the new release improves performance and compliance. For a list of all changes see: https://www.monetdb.org/downloads/Java/ChangeLog We recommend all users of MonetDB JDBC driver and JdbcClient program to download and use the latest jar files. The download location is: https://www.monetdb.org/downloads/Java/ For information and tips on using the MonetDB JDBC driver, read: https://www.monetdb.org/downloads/Java/release.txt For information on using the MonetDB JDBC driver to execute COPY INTO <table> FROM <file> ON CLIENT ... and/or COPY <SELECT query> INTO <file> ON CLIENT ... commands for fast client side CSV file data import and export, read: https://www.monetdb.org/downloads/Java/onclient.txt Reminder: since release monetdb-jdbc-3.0.jre8.jar the MonetDB JDBC Driver class name has been changed to: org.monetdb.jdbc.MonetDriver It used to be nl.cwi.monetdb.jdbc.MonetDriver which is marked as deprecated and will be removed in a future release. Please use the new driver class name asap in your configuration files/scripts and/or Java code.

1 0

Announcement: New Sep2022-SP2 Bugfix release of MonetDB suite
by Sjoerd Mullender 31 Jan '23

31 Jan '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Sep2022-SP2 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/sep2022/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### ODBC Driver - A crash in the ODBC driver was fixed when certain unsupported functions where used in a {fn ...} escape. - Prepare of a query where the sum of the number of parameters (question marks in the query) and the number of output columns is larger than 100 could fail with an unexpected error. This has been fixed. ### MonetDB Common - Fixed a race condition that could lead to a bat being added to the SQL catalog but nog being made persistent, causing a subsequent restart of the system to fail (and crash). - Fixed a race condition where a hash could have been created on a bat using the old bat count while in another thread the bat count got updated. This would make the hash be based on too small a size, causing failures later on. - When extending a bat failed, the capacity had been updated already and was therefore too large. This could then later cause a crash. This has been fixed by only updating the capacity if the extend succeeded. ### SQL Frontend - Fixed a regression where when there are multiple concurrent transactions, the dependencies weren't checked properly. - Added some error checking to prevent crashes. Errors would mainly occur under memory pressure. - Fixed cleanup after a failed allocation where the data being cleaned up was unitialized but still used as pointers to memory that also had to be freed. - Fixed a double cleanup after a failed allocation in COPY INTO. The double cleanup could cause a crash due to a race condition it enabled. ### Bug Fixes - [7343](https://github.com/MonetDB/MonetDB/issues/7343): GDKmmap requesting 0 virtual memory - [7347](https://github.com/MonetDB/MonetDB/issues/7347): A bug where an exception occurs even though it is a query with normal syntax (Merge Table)

1 0