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Type: Bug
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Resolution: Incomplete
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Priority: Minor - P4
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None
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Affects Version/s: 2.6.10
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Component/s: Sharding
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Labels:None
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ALL
A shard "r3" was replaced with a new server (same shard name). One mongos process recognised the change. The second and third mongos processes had a stale picture of which nodes made up rs3.
Once rs3 was re-added, the balancer (on one of the mongos nodes) started balancing to it's picture of "r3". Remaining two nodes kept looking for the old rs3.