.. _version_3.0.5:

=============
Version 3.0.5
=============

Released on 2018/07/30.

.. NOTE::

   If you are upgrading a cluster, you must be running CrateDB 2.0.4 or higher
   before you upgrade to 3.0.5.

   We recommend that you upgrade to the latest 2.3 release before moving to
   3.0.5.

   If you want to perform a `rolling upgrade`_, your current CrateDB version
   number must be at least :ref:`version_3.0.0`. Any upgrade from a version
   prior to this 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.

   Please consult the :ref:`version_3.0.0_upgrade_notes` before upgrading.

.. WARNING::

    Tables that were created prior to upgrading to CrateDB 2.x will not
    function with 3.0 and must be recreated before moving to 3.0.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`_.

.. WARNING::

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

.. _rolling upgrade: http://crate.io/docs/crate/guide/best_practices/rolling_upgrade.html
.. _full restart upgrade: http://crate.io/docs/crate/guide/best_practices/full_restart_upgrade.html
.. _back up your data: https://crate.io/a/backing-up-and-restoring-crate/
.. _inserting the data into a new table: https://crate.io/docs/crate/reference/en/latest/admin/system-information.html#tables-need-to-be-recreated

.. rubric:: Table of Contents

.. contents::
   :local:

Changelog
=========

Fixes
-----

- Fixed an issue which was introduced with ``3.0.4`` and could result in
  ``IllegalStateException`` being thrown during the startup of a CrateDB node,
  which prevents its successful bootstrap and one cannot recover from this
  state. ``3.0.4`` is a testing release and is not available in the stable
  channels.
