
The goal of this patch is to fix filtering on metadata. In HBase we should use the same approach as in SQL now: store raw metadata as well as flattened one. When user sends get request on meters, samples or resources it is possible not to fetch all the data but construct corresponding filter based on flattened metadata values. Unfortunatelly, it is not possible not to store raw metadata because flattening on API level is done in a different way. This improvement is postponed till API v3. Change-Id: I1206535ab12037817175d5e79716b223594f246a
ceilometer
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