@@ -49,10 +49,6 @@ General Limitations
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- `Queryable Encryption
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<https://www.mongodb.com/docs/v6.0/core/queryable-encryption/>`__
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isn't supported.
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- - After you replace the ``mongosync`` binary during an upgrade or a
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- downgrade, you should drop all non-system databases in the destination
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- cluster before starting the new binary. Syncing operations will
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- restart from the beginning when you start the new processes.
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- You cannot sync a collection that has a unique index and a non-unique
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index defined on the same field(s).
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- .. include:: /includes/fact-atlas-require-indexes-limitation.rst
@@ -81,9 +77,11 @@ Sharded Clusters
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- Sync from a replica set to a sharded cluster has the following
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limitations:
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- - Collections included in the ``sharding.shardingEntries`` option for
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- the :ref:`c2c-api-start` command cannot be renamed to use a
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- different database while ``mongosync`` is running.
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+ - ``mongosync`` allows users to rename collections that the
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+ ``sharding.shardingEntries`` option for the :ref:`c2c-api-start`
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+ command includes during sync. To see limitations on renaming
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+ collections while ``mongosync`` is running, see :ref:`Renaming
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+ During Sync <rename-during-sync>`.
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- When using the ``sharding.createSupportingIndexes`` option to create
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indexes supporting shard keys on the destination cluster during
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sync, you cannot create these indexes afterwards on the source
@@ -114,9 +112,9 @@ Sharded Clusters
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syncing.
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- The shard key cannot be modified using :dbcommand:`reshardCollection`
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during syncing.
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- - The maximum number of :ref:`shard key indexes
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- <sharding-shard-key-indexes>` is one lower than normal, 63 instead of
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- 64.
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+ - The maximum number of indexes per sharded collection is 63, which is
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+ one less than the :ref:`default limit
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+ <limit-number-of-indexes-per-collection>` of 64.
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- ``mongosync`` only supports syncing sharded collections that have
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default :ref:`collation <collation>` settings.
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