.. _version_6.2.9:

=============
Version 6.2.9
=============

Released on 2026-06-08.

.. NOTE::

    If you are upgrading a cluster, you must be running CrateDB 5.0.0 or higher
    before you upgrade to 6.2.9.

    We recommend that you upgrade to the latest 6.1 release before moving to
    6.2.9.

    A rolling upgrade from >= 6.1.2 to 6.2.9 is supported. Doing a rolling
    upgrade from an earlier version than 6.1.2 can cause runtime errors when
    executing statements relying on implicit casts.

    Before upgrading, you should `back up your data`_.

.. WARNING::

    Tables that were created before CrateDB 5.x will not function with 6.x
    and must be recreated before moving to 6.x.x.

    You can recreate tables using ``COPY TO`` and ``COPY FROM`` or by
    `inserting the data into a new table`_.

.. _back up your data: https://cratedb.com/docs/crate/reference/en/latest/admin/snapshots.html
.. _inserting the data into a new table: https://cratedb.com/docs/crate/reference/en/latest/admin/system-information.html#tables-need-to-be-recreated

.. rubric:: Table of contents

.. contents::
   :local:


See the :ref:`version_6.2.0` release notes for a full list of changes in the 6.2
series.

Fixes
=====

- Fixed intermittent ``UDF`` resolution failures when upgrading metadata from a
  remote cluster, for example during
  :ref:`logical replication <administration-logical-replication>`.

- Fixed an issue that caused nodes to fail to start when parsing persisted
  mappings for tables containing columns of type ``uuid``.

- Fixed a regression introduced with :ref:`version_6.0.0`, leading to stuck
  ``DROP SNAPSHOT`` and ``CREATE SNAPSHOT`` queries.

- Fixed an issue causing cache to retain some heavy structures, potentially
  leading to an ``OutOfMemoryError``.

- Fixed an issue causing ``COUNT`` queries on a partitioned table to fail with
  ``ShardNotFoundException`` error if some partition shards were temporarily
  unavailable.
