Apache Cassandra从2.1升级3.X [英] Apache Cassandra upgrade 3.X from 2.1

问题描述

是否可以将Apache Cassandra 2.1.9+直接升级到Apache Cassandra 3.1 +？

Is it possible to upgrade Apache Cassandra 2.1.9+ to Apache Cassandra 3.1+ directly?

3.0的发行说明中提到了直接升级至少需要Apache Cassandra 2.1.9+，但Apache Cassandra的所有其他发行版均未提及是否需要中间版本。

The release notes for 3.0 mention direct upgrades need a minimum of Apache Cassandra 2.1.9+, but all further releases of Apache Cassandra don't mention whether an intermediate version is needed.

推荐答案

是的，您可以从Cassandra 2.1.9（或更高版本）升级到Cassandra 3.1（或更高版本）。

Yes, you can upgrade from Cassandra 2.1.9 (or higher) to Cassandra 3.1 (or higher).

如 DataStax开发人员博客于2015年6月，Cassandra移至 tick-tock版本循环使用版本3。您可以从链接中获取详细信息，但要点是3.x的发行结构与2.x的发行结构不同。

As stated in the DataStax dev blog in June of 2015, Cassandra moved to a "tick-tock" release cycle with version 3. The details of which you can get from the link, but the main point is that the release structure of 3.x is not the same as it was with 2.x.

Cassandra 2.0、2.1和2.2在功能和存储修改方面足够不同，因此它们需要结构化的升级路径。 Cassandra 3.x没有。您可以直接升级到3.1、3.4或3.10（仅发布）。只要满足3.0升级要求（Cassandra版本> = 2.1.9），您就不必担心使用3.x系列进行中间升级的情况。

Cassandra 2.0, 2.1, and 2.2 were different enough in terms of features and storage modifications that they required a structured upgrade path. Cassandra 3.x does not. You can upgrade directly to 3.1, 3.4, or 3.10 (just released). As long as you meet the 3.0 upgrade requirements (Cassandra version >= 2.1.9) you don't need to worry about intermediate upgrades with the 3.x line.

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