November 2023 - users-list

[MonetDB-users] Proofreading your professional documents
by Richard Hounslow 24 Feb '24

24 Feb '24

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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

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Hot Backup no longer working when restoring
by warren.master＠rohatyngroup.com 18 Nov '23

18 Nov '23

i have been using hot backups for a while now , they are fast and have been very reliable for creating new servers and restoreing existig ones today I tried a restore from our daily hot backup that used call sys.hot_snapshot('/home/monetdb/mdb_hotbackup_20231117-1355390956724.tar.lz4'); I use the following to set up a new server monetdbd create /home/dbFarm tar -I lz4 -C /home/dbFarm -axf mdb_hotbackup_20231117-1355390956724.tar.lz4 monetdb start trg log filles with thousands of the below message and the db crashes MSG trg[9744]: #main thread: cleanup_and_swap: WARNING: Failed to set bat(381716) transient Im using lastest build on all machines MonetDB 5 server v11.47.11 (Jun2023-SP2) 2023-11-18 04:58:15 MSG trg[9744]: # Serving database 'trg', using 8 threads 2023-11-18 04:58:15 MSG trg[9744]: # Compiled for x86_64-pc-linux-gnu/64bit with 128bit integers 2023-11-18 04:58:15 MSG trg[9744]: # Found 62.759 GiB available main-memory of which we use 51.149 GiB 2023-11-18 04:58:15 MSG trg[9744]: # Copyright (c) 1993 - July 2008 CWI. 2023-11-18 04:58:15 MSG trg[9744]: # Copyright (c) August 2008 - 2023 MonetDB B.V., all rights reserved

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