migrate 1.6 release notes

source/release-notes/1.6-changes.txt

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+:orphan:
+
+======================
+Changes in MongoDB 1.6
+======================
+
+.. toctree::
+
+   1.6

source/release-notes/1.6.txt

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+=============================
+Release Notes for MongoDB 1.6
+=============================
+
+.. default-domain:: mongodb
+
+.. contents:: See the :doc:`full index of this page <1.6-changes>` for
+              a complete list of changes included in 1.6.
+   :backlinks: none
+   :local:
+   :depth: 1
+
+Upgrading
+---------
+
+MongoDB 1.6 is a drop-in replacement for 1.4. To upgrade, simply
+shutdown :program:`mongod` then restart with the new binaries.
+
+*Please note that you should upgrade to the latest version of whichever
+driver you're using. Certain drivers, including the Ruby driver, will
+require the upgrade, and all the drivers will provide extra features for
+connecting to replica sets.*
+
+Sharding
+--------
+
+:doc:`/sharding` is now production-ready, making MongoDB horizontally
+scalable, with no single point of failure. A single instance of
+:program:`mongod` can now be upgraded to a distributed cluster with zero
+downtime when the need arises.
+
+- :doc:`/sharding`
+
+- :doc:`/tutorial/deploy-shard-cluster`
+
+- :doc:`/tutorial/convert-replica-set-to-replicated-shard-cluster`
+
+Replica Sets
+------------
+
+:doc:`Replica sets </replication>`, which provide automated failover
+among a cluster of ``n`` nodes, are also now available.
+
+Please note that replica pairs are now deprecated; we strongly recommend
+that replica pair users upgrade to replica sets.
+
+- :doc:`/replication`
+
+- :doc:`/tutorial/deploy-replica-set`
+
+- :doc:`/tutorial/convert-standalone-to-replica-set`
+
+Other Improvements
+------------------
+
+- The ``w`` option (and ``wtimeout``) forces writes to be propagated to ``n``
+  servers before returning success (this works especially well with
+  replica sets)
+
+- :doc:`$or queries </reference/operator/or>`
+
+- Improved concurrency
+
+- :doc:`$slice </reference/projection/slice>` operator for returning
+  subsets of arrays
+
+- 64 indexes per collection (formerly 40 indexes per collection)
+
+- 64-bit integers can now be represented in the shell using NumberLong
+
+- The :doc:`findAndModify </reference/command/findAndModify>` command
+  now supports upserts. It also allows you to specify fields to return
+
+- $showDiskLoc option to see disk location of a document
+
+- Support for IPv6 and UNIX domain sockets
+
+Installation
+------------
+
+- Windows service improvements
+
+- The C++ client is a separate tarball from the binaries
+
+1.6.x Release Notes
+-------------------
+
+- `1.6.5 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/06_QCC05Fpk>`_
+
+1.5.x Release Notes
+-------------------
+
+- `1.5.8 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/uJfF1QN6Thk>`_
+
+- `1.5.7 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/OYvz40RWs90>`_
+
+- `1.5.6 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/4l0N2U_H0cQ>`_
+
+- `1.5.5 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/oO749nvTARY>`_
+
+- `1.5.4 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/380V_Ec_q1c>`_
+
+- `1.5.3 <https://groups.google.com/forum/?hl=en&fromgroups=#!topic/mongodb-user/hsUQL9CxTQw>`_
+
+- `1.5.2 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/94EE3HVidAA>`_
+
+- `1.5.1 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/7SBPQ2RSfdM>`_
+
+- `1.5.0 <https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/VAhJcjDGTy0>`_
+
+You can see a full list of all changes on
+`JIRA <https://jira.mongodb.org/secure/IssueNavigator.jspa?mode=hide&requestId=10107>`_.
+
+Thank you everyone for your support and suggestions!