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Tips and Tricks
agirbal edited this page Sep 28, 2011
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When a replica set has been running for a long time, and replication was not always smooth (e.g. server crash, replication stall) it is possible that servers do not have exactly the same data.
To compare replicas do following:
- obtain a mongo instance to the replica set
- click on the replica node, then "Tools / Compare Replicas"
- choose the stat you want to compare.
You will obtain a report showing any differences between replicas. Note that it is often normal that the size of data in collection differs, due to document padding.