Version 3.1.1

Released on 2018/09/25.


If you are upgrading a cluster, you must be running CrateDB 2.0.4 or higher before you upgrade to 3.1.1.

We recommend that you upgrade to the latest 3.0 release before moving to 3.1.1.

You cannot perform a rolling upgrade to this version. Any upgrade to this version will require a full restart upgrade.

When restarting, CrateDB will migrate indexes to a newer format. Depending on the amount of data, this may delay node start-up time.


Tables that were created prior to upgrading to CrateDB 2.x will not function with 3.1 and must be recreated before moving to 3.1.x.

You can recreate tables using COPY TO and COPY FROM while running a 2.x release into a new table, or by inserting the data into a new table.

Before upgrading, you should back up your data.

Table of contents



  • Added support for using generated columns inside object columns.


  • Calling an unknown user-defined function now results in an appropriate error message instead of a NullPointerException.

  • Fixed processing of the endpoint, protocol and max_retries S3 repository parameters.