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DOCS-249-related: change to write concern glossary entry #348

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Oct 29, 2012
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DOCS-249-related: change to write concern glossary entry #348

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DOCS-249-related: change to write concern glossary entry
Oct 24, 2012
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DOCS-249-related: delete fsync glossary entry
Oct 24, 2012
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13 changes: 5 additions & 8 deletions source/reference/glossary.txt
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Expand Up @@ -366,10 +366,6 @@ Glossary
migration of :term:`chunks <chunk>`. Administrators must disable
the balancer for all maintenance operations on a sharded cluster.

fsync
A system call that flushes all dirty, in-memory pages to disk. MongoDB
calls ``fsync()`` every 60 seconds.

chunk
In the context of a :term:`sharded cluster`, a chunk is a contiguous
range of :term:`shard key` values assigned to a particular :term:`shard`.
Expand Down Expand Up @@ -588,10 +584,11 @@ Glossary
nodes have :term:`eventual consistency`.

write concern
A setting on writes to MongoDB that allows the user to specify,
how the database will handle a write operation before
returning. This often determines how many :term:`replica set`
members should propagate a write before returning.
Specifies whether a write operation has succeeded. Write concern
allows your application to detect insertion errors or unavailable
:program:`mongod` instances. For :term:`replica sets <replica
set>`, you can configure write concern to confirm replication to a
specified number of members.

.. seealso:: :ref:`Write Concern for Replica Sets <replica-set-write-concern>`.

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