ClickHouse Releases: Upgrade or not Upgrade

ClickHouse Releases: Upgrade or not Upgrade

ClickHouse team has released 1.1.54385 version recently. This is yet another bugfixing update in a row of small updates that followed 1.1.54378 release from mid-April. Unfortunately, ClickHouse test coverage is not perfect, and sometimes new features are accompanied by disappointing regressions. ClickHouse team certainly addresses problems in hotfix releases, but ClickHouse streamlined release version numbering makes it not easy to distinguish hotfixes from the feature releases. So how to decide is it safe to upgrade or not?

ClickHouse release 1.1.54380

ClickHouse team and community contributors actively develop ClickHouse adding many new features, improving performance and flexibility. Unfortunately, sometimes it affects stability of the product. We were very upset by some unexpected regressions in recent ClickHouse releases. After initial testing of latest 1.1.54380 version we think it may be a good candidate for the new stable release. Previous releases free from severe issues were aged 1.1.54292 and 1.1.54327.

ClickHouse 1.1.54380 is available in Yandex and Altinity repositories. So what’s new and important in 1.1.54380 and previous release 1.1.54378.

ClickHouse releases 1.1.54318 and 1.1.54327

  The new deb packages are available from Yandex repo and RPMs from Altinity repo. ClickHouse release 1.1.54327 Dec 21,2017 This release contains bug fixes for the previous release 1.1.54318: Fixed bug with possible race condition in replication that could lead to data loss. This issue affects versions 1.1.54310 and 1.1.54318. If you use one[…]

ClickHouse release 1.1.54310

  The new deb packages are available from Yandex repo and RPMs from Altinity repo. New features: Custom partitioning key for the MergeTree family of table engines. Kafka table engine. Added support for loading CatBoost models and applying them to data stored in ClickHouse. Added support for time zones with non-integer offsets from UTC. Added[…]

ClickHouse release 1.1.54292

  The new deb packages are available from Yandex repo and RPMs from Altinity repo. New features: Added the pointInPolygon function for working with coordinates on a coordinate plane. Added the sumMap aggregate function for calculating the sum of arrays, similar to SummingMergeTree. Added the trunc function. Improved performance of the rounding functions (round, floor,[…]

ClickHouse release 1.1.54289

  The new deb packages are available from Yandex repo and RPMs from Altinity repo. New features: SYSTEM queries for server administration: SYSTEM RELOAD DICTIONARY, SYSTEM RELOAD DICTIONARIES, SYSTEM DROP DNS CACHE, SYSTEM SHUTDOWN, SYSTEM KILL. Added functions for working with arrays: concat, arraySlice, arrayPushBack, arrayPushFront, arrayPopBack, arrayPopFront. Added the root and identity parameters for[…]

ClickHouse New Releases and ChangeLog

It took a while for Yandex to respond to numerous community requests regarding release notes. But finally it’s there. On August 21-st Yandex created a changelog file covering releases starting from 1.1.54245, and they keep it up to date so far.

ClickHouse 1.1.54245 release

  Few weeks ago Yandex released ClickHouse 1.1.54245 that included a number of features requested by community. The new deb packages are available from Yandex repo and RPMs from Altinity repo. So let’s see what’s new in this release. New features Distributed DDLs (see CREATE TABLE ON CLUSTER ) New table engine Dictionary that allows[…]

ClickHouse Release Notes

ClickHouse is an exellent DBMS with very smart people working on it. Unfortunately, it still lacks some important communication procedures, and arguable the most wanted one is release notes. 

Altinity mission is to make ClickHouse use easy for everbody, and we will try to fill the gap between Yandex and end users. 

Below are release notes that Yandex team presented at the recent meetup in Ekaterinburg. It includes changes and new features appeared in latest 1.1.54231 release as well as some others that were not yet documented or publically explained.