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Software-update: CockroachDB 19.1.1

Het team achter CockroachDB heeft enkele dagen geleden versie 19.1.1 uitgebracht. Dit is een opensourcedatabase die uitermate geschikt is voor cloudomgevingen en die verschillende opties voor het opvangen van problemen biedt, dankzij de verspreide opzet. Voor meer informatie verwijzen we naar deze pagina, waar de meest gestelde vragen worden beantwoord. Wie wellicht verbaasd opkijkt van het versienummer, kan in deze blog de achtergrondinformatie terugvinden over deze verandering. De beknopte aankondiging ziet er als volgt uit:

What's New in v19.1.1

Enterprise edition changes
  • CHANGEFEEDs now accept a key_in_value option; this is automatically used for cloud storage sinks, making the primary key of deleted rows recoverable. #37328
SQL language changes
  • EXPLAIN (DISTSQL) CREATE STATISTICS now shows the DistSQL plan used by the CREATE STATISTICS job. #37237
  • Added missing columns to information_schema.columns. #37283
Bug fixes
  • Prevented panics when adding comments to database objects at high verbosity. #37325
  • Fixed panics when trying to run certain SHOW commands via the pgwire prepare path. #37325
  • Fixed a regression in 19.1 that prevented empty arrays from being accepted over pgwire. #37398
  • While a cluster is unavailable (e.g., during a network partition), memory and goroutines used for authenticating connections no longer leak when the client closes said connections. #36177
  • Fixed a possible panic while recovering from a WAL on which a sync operation failed. #37109
  • Fixed an error which could occur when a zigzag join was performed against a table with dropped columns. #37245
  • Fixed incorrect query plans/results when non-validated FK constraints are not satisfied by the data. #37253
  • CHANGEFEEDs now retry instead of causing errors in more situations. #37092
  • Fixed a bug where CHANGEFEED job progress would regress when the job was restarted. #37091
  • The changefeed.max_behind_nanos metric now has fewer false positives of changefeeds falling behind. #37048
  • Corrected the names of some columns for tables created with CREATE TABLE <name> AS <query>. #37238
  • Fixed a bug causing unvalidated check constraints to disappear from the output of SHOW CONSTRAINTS and to not be referenced in ALTER TABLE after upgrading to 19.1. #37462
Performance improvements
  • Improved the performance of some queries containing predicates with constant functions, since these functions are now evaluated earlier during query optimization. #37234
  • Improved the performance of some queries by teaching the optimizer to always prefer constrained scans over unconstrained scans. #37235
Doc updates
  • Updated the Kubernetes tutorials for running CockroachDB on GKE to specify a reasonable machine type. Also updated the Helm-specific instructions for maintenance tasks (adding/removing nodes, upgrading a cluster).#4813 #4805
  • Fixed the code sample in Build a PHP App with CockroachDB to not create new connections for each query. #4804.
Versienummer 19.1.1
Releasestatus Final
Besturingssystemen Windows 7, Linux, macOS, Windows Server 2012, Windows 8, Windows 10, Windows Server 2016
Website Cockroach Labs
Download https://www.cockroachlabs.com/get-cockroachdb/
Licentietype Voorwaarden (GNU/BSD/etc.)

Door Japke Rosink

Meukposter

07-06-2019 • 16:22

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Bron: Cockroach Labs

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