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fixed secondary throttle section #2235

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fixed secondary throttle section #2235

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8 changes: 4 additions & 4 deletions source/tutorial/configure-sharded-cluster-balancer.txt
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Expand Up @@ -127,14 +127,14 @@ The ``_secondaryThrottle`` parameter of the balancer and the
:ref:`chunk migration <chunk-migration-replication>`. By default,
``_secondaryThrottle`` is ``true``, which means each document move
during chunk migration propagates to at least one secondary before the
balancer proceeds with its next operation: this is equivalent to a write
balancer proceeds with the next document: this is equivalent to a write
concern of ``{ w: 2 }``.

You can also configure the ``writeConcern`` for the
``_secondaryThrottle`` operation, to configure how migrations will
wait for replication to complete. For more information on the
replication behavior during various steps of chunk migration,
see:ref:`chunk-migration-replication`.
see :ref:`chunk-migration-replication`.

To change the balancer's ``_secondaryThrottle`` and ``writeConcern``
values, connect to a :program:`mongos` instance and directly update
Expand All @@ -148,8 +148,8 @@ example, from a :program:`mongo` shell connected to a
use config
db.settings.update(
{ "_id" : "balancer" },
{ $set : { "_secondaryThrottle" : false },
{ "writeConcern": { "w": "majority" } } },
{ $set : { "_secondaryThrottle" : false ,
"writeConcern": { "w": "majority" } } },
{ upsert : true }
)

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