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Type: Bug
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Resolution: Fixed
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Priority: Major - P3
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Affects Version/s: None
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Component/s: Sharding
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Fully Compatible
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ALL
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v4.4, v4.2, v4.0
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Sharding 2021-03-08, Sharding 2021-03-22, Sharding 2021-04-05
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(copied to CRM)
We allow the creation of logical sessions on arbiters. These sessions are distinct from sessions on the rest of the replica set or sharded cluster; they are strictly local.
However, the logical session reaper does not work on arbiters. Since SERVER-40441, it is disabled explicitly. Before that, it would fail because config.system.sessions does not exist on arbiters (and even if you created it, it wouldn't be sharded on a sharded cluster). This results in eventually running out of space in the session cache, if any are being created.
- is related to
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SERVER-40441 Arbiter nodes log error messages when try to create session collection or check if it exists
- Closed