> > I believe reducing date precision would decrease number of unique terms in > the index and may help with hystogram. Say, if your histogram precision > needs date only and not time I would not even index time part (note you may > use multifield mapping if you need both precise and date rounded timestamp) > The histrogram should be zoomable: day over last 90 days, hour over last 72hours and minute over last 6 hours. Would you suppose to store different precision timestamp (day/hour/minute) for performance issues? I understand the concept of multivalue field. But in which way are the values filled? Is there a way to only store the exact timestamp amd create the less precision timestamps? Or should the less precision timestamps be contained in to indexing document? Do you have any examples for timestamp on multivalue fields?
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