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DOCS365 add note/content that balancer window is in localtime #124

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Aug 15, 2012
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DOCS365 add note/content that balancer window is in localtime #124

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9 changes: 6 additions & 3 deletions source/administration/sharding.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -677,9 +677,12 @@ be able to migrate chunks:
db.settings.update({ _id : "balancer" }, { $set : { activeWindow : { start : "<start-time>", stop : "<stop-time>" } } }, true )

Replace ``<start-time>`` and ``<end-time>`` with time values using
two digit hour and minute values (e.g ``HH:MM``) that describe the beginning and end
boundaries of the balancing window. For instance, running the following
will force the balancer to run between 11PM and 6AM only:
two digit hour and minute values (e.g ``HH:MM``) that describe the
beginning and end boundaries of the balancing window.
These times will be evaluated relative to the time zone of each individual
:program:`mongos` instance in the shard cluster.
For instance, running the following
will force the balancer to run between 11PM and 6AM local time only:

.. code-block:: javascript

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8 changes: 8 additions & 0 deletions source/core/sharding-internals.txt
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Expand Up @@ -382,6 +382,14 @@ Once a balancing round starts, the balancer will not stop until the
difference between the number of chunks on any two shards is *less
than two.*

.. note::

The balancer can be restricted to operating between specific
start and end times, see
":ref:`Schedule the Balancing Window <sharding-schedule-balancing-window>`."
These times will be evaluated relative to the time zone of each individual
:program:`mongos` instance in the shard cluster.

.. index:: sharding; chunk size
.. _sharding-chunk-size:

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