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Type: Bug
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Resolution: Duplicate
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Priority: Major - P3
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None
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Affects Version/s: None
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Component/s: Sharding
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None
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ALL
While we reload shard information before running the balancer, we don't do the same for auto-migrates, and the logic for the target shard is different from the balancer policy.
There's also a secondary race condition in that it's possible for shard status to change after shard info reload and before the migration is triggered, but this is a much rarer event and will generally be caught while waiting for draining.
- duplicates
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SERVER-14506 special top chunk logic can move max chunk to a shard with incompatible tag
- Closed