Version 4.4.1

Released on 2021-02-03.

Note

If upgrading a cluster, you must be running CrateDB 4.0.2 or higher before you upgrade to 4.4.1.

We recommend that you upgrade to the latest 4.3 release before moving to 4.4.1.

A rolling upgrade from 4.3.0+ to 4.4.1 is supported.

Before upgrading, you should back up your data.

See the Version 4.4.0 release notes for a full list of changes in the 4.4 series.

Fixes

• Fixed an issue that could lead to stuck queries when joining more than two relations and if the WHERE clause contained filters on primary key columns that led to an execution plan using a primary key lookup on at least one relation.

• Fixed an issue in the PostgreSQL wire protocol implementation that could lead to incorrect results on the client side if a client invoked a write operation and sent an explicit flush message before the sync message. The node-postgres client is one client that uses such a message sequence.

• Fixed an issue that could lead to a stream has already been operated upon or closed error when using primary key lookup operations as part of a query with several JOIN clauses.

• Fixed a regression that caused queries which used a parameter placeholder in a join condition to fail with an The assembled list of ParameterSymbols is invalid. Missing parameters error.