.. _version_2.2.7:

=============
Version 2.2.7
=============

Released on 2018/01/25.

.. NOTE::

    If you are upgrading a cluster, you must be running CrateDB
    :ref:`version_1.1.3` or higher before you upgrade to 2.2.7.

    If you want to perform a `rolling upgrade`_, your current CrateDB version
    number must be :ref:`version_2.2.0`.  If you want to upgrade from a version
    prior to this, the upgrade will introduce all of the breaking changes listed
    for :ref:`version_2.2.0`, and will require a `full restart upgrade`_.

.. WARNING::

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

.. _rolling upgrade: https://crate.io/docs/crate/howtos/en/latest/admin/rolling-upgrade.html
.. _full restart upgrade: https://crate.io/docs/crate/howtos/en/latest/admin/full-restart-upgrade.html
.. _back up your data: https://crate.io/docs/crate/reference/en/latest/admin/snapshots.html

.. rubric:: Table of contents

.. contents::
   :local:

Changelog
=========

Fixes
-----

- Removed unnecessary invocation of non-existent ``syscall`` that caused
  CrateDB to crash on startup with certain Ubuntu kernel versions.

- Ensured natural order of configuration keys for the Host Based
  Authentication.

- Fixed encoding/decoding of ``Timestamp`` type for PostgreSQL wire protocol
  to support Golang PostgreSQL drivers.
