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YDB Server 23.1.26
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@Amarantine84 Amarantine84 released this 16 May 12:21
· 15512 commits to main since this release
23.1.26
b5a989b

Functionality:

  • Added initial table scan when creating a CDC changefeed. Now, you can export all the data existing at the time of changefeed creation.
  • Added atomic index replacement. Now, you can atomically replace one pre-defined index with another. This operation is absolutely transparent for your application. Indexes are replaced seamlessly, with no downtime.
  • Added the audit log: Event stream including data about all the operations on YDB objects.

Performance:

  • Improved formats of data exchanged between query stages. As a result, we accelerated SELECTs by 10% on parameterized queries and by up to 30% on write operations.
  • Added autoconfiguring for the actor system pools based on the workload against them. This improves performance through more effective CPU sharing.
  • Optimized the predicate logic: Processing of parameterized OR or IN constraints is automatically delegated to DataShard.
  • (Experimental) For scan queries, you can now effectively search for individual rows using a primary key or secondary indexes. This can bring you a substantial gain in performance in many cases. Similarly to regular queries, to use a secondary index, you need to explicitly specify its name in the query text using the VIEW keyword.
  • The query's computational graph is now cached at query runtime, reducing the CPU resources needed to build the graph.

Bug fixes:

  • Fixed bugs in the distributed data warehouse implementation. We strongly recommend all our users to upgrade to the latest version.
  • Fixed the error that occurred on building an index on NOT NULL columns.
  • Fixed statistics calculation with MVCC enabled.
  • Fixed errors with backups.
  • Fixed the race condition that occurred at splitting and deleting a table with SDC.

Full Changelog: 22.5.10...23.1.26

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