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Add examples of tasks should be stopped
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piroor committed Apr 29, 2015
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Expand Up @@ -41,7 +41,7 @@ Here we go!
*To do "hot-add" (dynamic changing of cluster members without downtime) a new replica to a cluster, you must have two or more existing replicas in the cluster.*
While the operation is in progress, one of existing replicas becomes the "source" to copy data to the newly added replica, and other replicas provide the service.

If you have only one replica in the cluster, *you must stop any modification on the database until the operation completely finishes*.
If you have only one replica in the cluster, *you must stop any modification on the database until the operation completely finishes* - cronjob batches, crawlers, and so on.
Otherwise, databases in each replica can be irregularity.
This is the list of typical built-in commands which can modify the database:

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