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Type:
Incident report
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Status: Closed
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Priority:
Trivial
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Resolution: Fixed
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Affects Version/s: 3.2.0beta1
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Fix Version/s: 3.0.6rc1, 3.2.2rc1, 3.4.0alpha1
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Component/s: API (A), Server (S)
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Labels:
This can be considered either a nasty bug or a very cool undocumented feature. 
nodata(0) returns 0 (there is data) for items with at least one value stored in history or value cache.
nodata(0) returns 1 (there is no data) for items with empty history (no data gathered or all data deleted by housekeeper and value cache cleared).