I don't think its a bug. An update in Apples mdimport schema will cause this. I checked this file /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Resources/MetadataSchema.xsd on OSX 10.6.8 and OSX 10.9 and found kMDItemDateAdded
only in 10.9
.
When your mdworker will update your existing Meta Data using the new schema, it will fill kMDItemDateAdded
with null
, because PDF.mdimporter
is not taking care of this attribute. How should the pdf know, when it is added?
If your mds
is consuming lots of CPU time ou should re-index your Spotlight Database like mentioned here