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Release 4.6.0
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‎docs/appendices/release-notes/4.6.0.rst‎

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.. _version_4.6.0:
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=============
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Version 4.6.0
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=============
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Released on 2021-07-13.
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.. NOTE::
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If you are upgrading a cluster, you must be running CrateDB 4.0.2 or higher
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before you upgrade to 4.6.0.
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We recommend that you upgrade to the latest 4.3 release before moving to
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4.6.0.
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A rolling upgrade from 4.5.x to 4.6.0 is supported.
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Before upgrading, you should `back up your data`_.
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.. _back up your data: https://crate.io/docs/crate/reference/en/latest/admin/snapshots.html
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.. rubric:: Table of Contents
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.. contents::
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:local:
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Deprecations
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============
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- Deprecated the :ref:`node.max_local_storage_nodes
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<node.max_local_storage_nodes>` setting.
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Changes
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=======
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Performance Improvements
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------------------------
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- Improved the performance of the :ref`hyperloglog_distinct
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<aggregation-hyperloglog-distinct>` aggregation function.
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- Improved the performance of ``SELECT`` statements with ``WHERE`` conditions
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that are in the form of ``WHERE COL=COL``.
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- Improved the performance of ``INSERT FROM query`` statements where the
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``query`` contains a ``GROUP BY`` clause.
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- Improved the internal throttling mechanism used for ``INSERT FROM QUERY`` and
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``COPY FROM`` operations. This should lead to these queries utilizing more
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resources if the cluster can spare them.
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- Added an optimization that improves the performance of ``count()``
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aggregations on object columns that have at least one inner column with a
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``NOT NULL`` constraint.
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SQL Statements and Compatibility
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--------------------------------
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- Added the :ref:`bit(n) <data-type-bit>` data type.
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- CrateDB now accepts the ``START TRANSACTION`` statement for :ref:`PostgreSQL
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wire protocol <postgres_wire_protocol>` compatibility. However, CrateDB does
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not support transactions and will silently ignore this statement.
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- Added support for directory-level wild card expansion for URIs passed to
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``COPY FROM`` statements.
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New Scalars
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-----------
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- Added :ref:`array_to_string <scalar-array-to-string>` scalar function
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that concatenates array elements into a single string using a separator and
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an optional null-string.
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- Added :ref:`array_min <scalar-array-min>` and :ref:`array_max
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<scalar-array-max>` scalar functions returning the minimal and maximal
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element in array respectively.
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- Added the :ref:`array_sum <scalar-array-sum>` scalar function
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that returns the sum of all elements in an array.
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- Added the :ref:`array_avg <scalar-array-avg>` scalar function that returns
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the average of all elements in an array.
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Administration and Operations improvements
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------------------------------------------
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- Users can now read tables within the ``pg_catalog`` schema without explicit
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``DQL`` permission. They will only see records the user has privileges on.
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- Users with AL privileges (or DDL on both tables) can now run the following
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ALTER CLUSTER commands:
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``ALTER CLUSTER SWAP TABLE source TO target``,
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``ALTER CLUSTER REROUTE RETRY FAILED``,
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``ALTER CLUSTER GC DANGLING ARTIFACTS``.
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- Added support for encrypting node-to-node communication.
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- Changed the privileges model to allow users with ``DDL`` privileges on a
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table to use the :ref:`OPTIMIZE TABLE <sql-optimize>` statement.
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- Included the shard information for closed tables in ``sys.shards`` table.
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- Added a ``closed`` column to :ref:`sys-shards <sys-shards>` exposing
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the state of the table associated with the shard.
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- Added support for reading ``cgroup`` information in the ``cgroup v2`` format.
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- Added support of hostnames in HBA configuration.
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Administration Console
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----------------------
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- Removed all analytics (UDC, Segment)
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- Removed the "Notifications" section in the statusbar
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- Removed min-width for columns in console to reduce scrolling
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- Changed syntax highlighting in console. Keywords in double quotes are now longer
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highlighted. Types are highlighted with a different color.
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- Activated codemirror code hints for keywords.
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- Changed the look of the Scrollbar to appear more modern.
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- Added length limit for ``varchar(n)`` and ``bit(n)`` types in table view.

‎docs/appendices/release-notes/index.rst‎

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4.x
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---
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4.6.x
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.....
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.. toctree::
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:maxdepth: 1
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4.6.0
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4.5.x
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.....
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‎docs/appendices/release-notes/unreleased.rst‎

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Deprecations
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============
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- Deprecated the :ref:`node.max_local_storage_nodes
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<node.max_local_storage_nodes>` setting.
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None
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Changes
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=======
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Performance Improvements
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------------------------
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- Improved the performance of the :ref`hyperloglog_distinct
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<aggregation-hyperloglog-distinct>` aggregation function.
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- Improved the performance of ``SELECT`` statements with ``WHERE`` conditions
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that are in the form of ``WHERE COL=COL``.
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- Improved the performance of ``INSERT FROM query`` statements where the
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``query`` contains a ``GROUP BY`` clause.
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- Improved the internal throttling mechanism used for ``INSERT FROM QUERY`` and
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``COPY FROM`` operations. This should lead to these queries utilizing more
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resources if the cluster can spare them.
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- Added an optimization that improves the performance of `count()` aggregations
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on object columns that have at least one inner column with a `NOT NULL`
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constraint.
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SQL Statements and Compatibility
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--------------------------------
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- Added the :ref:`bit(n) <data-type-bit>` data type.
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- CrateDB now accepts the ``START TRANSACTION`` statement for :ref:`PostgreSQL
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wire protocol <postgres_wire_protocol>` compatibility. However, CrateDB does
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not support transactions and will silently ignore this statement.
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- Added support for directory-level wild card expansion for URIs passed to
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``COPY FROM`` statements.
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New Scalars
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-----------
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- Added :ref:`array_to_string <scalar-array-to-string>` scalar function
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that concatenates array elements into a single string using a separator and
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an optional null-string.
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- Added :ref:`array_min <scalar-array-min>` and :ref:`array_max
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<scalar-array-max>` scalar functions returning the minimal and maximal
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element in array respectively.
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- Added the :ref:`array_sum <scalar-array-sum>` scalar function
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that returns the sum of all elements in an array.
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- Added the :ref:`array_avg <scalar-array-avg>` scalar function that returns
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the average of all elements in an array.
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Administration and Operations improvements
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------------------------------------------
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- Users can now read tables within the ``pg_catalog`` schema without explicit
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``DQL`` permission. They will only see records the user has privileges on.
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- Users with AL privileges (or DDL on both tables) can now run the following
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ALTER CLUSTER commands:
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``ALTER CLUSTER SWAP TABLE source TO target``,
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``ALTER CLUSTER REROUTE RETRY FAILED``,
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``ALTER CLUSTER GC DANGLING ARTIFACTS``.
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- Added support for encrypting node-to-node communication.
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- Changed the privileges model to allow users with ``DDL`` privileges on a
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table to use the :ref:`OPTIMIZE TABLE <sql-optimize>` statement.
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- Included the shard information for closed tables in ``sys.shards`` table.
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- Added a ``closed`` column to :ref:`sys-shards <sys-shards>` exposing
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the state of the table associated with the shard.
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- Added support for reading ``cgroup`` information in the ``cgroup v2`` format.
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- Added support of hostnames in HBA configuration.
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Administration Console
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----------------------
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- Removed all analytics (UDC, Segment)
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- Removed the "Notifications" section in the statusbar
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- Removed min-width for columns in console to reduce scrolling
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- Changed syntax highlighting in console. Keywords in double quotes are now longer
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highlighted. Types are highlighted with a different color.
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- Activated codemirror code hints for keywords.
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- Changed the look of the Scrollbar to appear more modern.
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- Added length limit for ``varchar(n)`` and ``bit(n)`` types in table view.
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None
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Fixes

‎server/src/main/java/org/elasticsearch/Version.java‎

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public static final Version V_4_5_3 = new Version(7_05_03_99, false, org.apache.lucene.util.Version.LUCENE_8_7_0);
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public static final Version V_4_5_4 = new Version(7_05_04_99, false, org.apache.lucene.util.Version.LUCENE_8_7_0);
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public static final Version V_4_6_0 = new Version(7_06_00_99, true, org.apache.lucene.util.Version.LUCENE_8_8_2);
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public static final Version V_4_6_0 = new Version(7_06_00_99, false, org.apache.lucene.util.Version.LUCENE_8_8_2);
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public static final Version CURRENT = V_4_6_0;
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