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Type: Bug
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Resolution: Done
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Priority: Critical - P2
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None
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Affects Version/s: None
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Component/s: None
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Labels:None
When upgrading a sharded cluster from 2.2 to 2.4, the config servers require considerable amounts of free space in order to successfully complete the upgrade.
The documentation should state that the amount of free space on the filesystem where the config server db is stored should 4x-5x the amount of space currently used by the config DB data files.
Checking for this free space should be part of the pre-upgrade checklist.