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Type:
Improvement
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Resolution: Unresolved
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Priority:
Major - P3
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Affects Version/s: 4.4.26
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Component/s: None
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Cluster Scalability
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while the documentation for setting the balancer window does explicitly instruct the operator to use 2 digit hours, since making a balancer window change is performed via an updateOne() op to the config.settings namespace, accidentally using a single digit hour for the window start can result in the balancer window being set to an undefined state.
Example, when balancer window is:
Atlas [direct: mongos] config> db.settings.find()
[
{
_id: 'balancer',
mode: 'full',
stopped: false,
activeWindow: { start: '1:00', end: '10:00' }
},
{ _id: 'chunksize', value: 64 },
{ _id: 'autosplit', enabled: true }
]
sh.status() shows the following:
...
balancer
{
'Currently enabled': 'yes',
'Currently running': 'no',
'Balancer active window is set between': '1:00 and undefined server local time',
'Failed balancer rounds in last 5 attempts': 0,
'Migration Results for the last 24 hours': 'No recent migrations'
}
...
somewhat related: SERVER-81311
- related to
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- Backlog
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