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DOCSP-44360-chunk-migration-balancers (#490) (#492)
* DOCSP-44360-chunk-migration-balancers * * * JD feedback (cherry picked from commit f2c92ba)
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.. important::
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When the source or destination cluster is a sharded cluster, you must stop
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the balancer on both clusters and not run the :dbcommand:`moveChunk` or
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:dbcommand:`moveRange` commands for the duration of the migration. To stop
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the balancer, run the :dbcommand:`balancerStop` command and wait for the
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command to complete.

source/reference/mongosync/mongosync-behavior.txt

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cluster to the destination cluster. However ``mongosync`` does not
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preserve the source cluster's sharding configuration.
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.. include:: /includes/fact-mongosync-balancer.rst
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Pre-Split Chunks
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''''''''''''''''
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source/topologies/multiple-mongosyncs.txt

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loaded clusters, use one ``mongosync`` instance for each shard on the
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source cluster.
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.. important::
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When the source or destination cluster is a sharded cluster, stop the
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balancer on both clusters and don't run the :dbcommand:`moveChunk` or
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:dbcommand:`moveRange` commands for the entire lifetime of the
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migration. To stop the balancer, run the :dbcommand:`balancerStop`
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command and wait for the command to complete.
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.. include:: /includes/fact-mongosync-balancer.rst
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.. _c2c-sharded-config-single:
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