* factor out different varbit schemes and include Beorn's "optimum" for buckets
Signed-off-by: Dieter Plaetinck <dieter@grafana.com>
* use more compact dod encoding scheme for SHS chunk columns
Signed-off-by: Dieter Plaetinck <dieter@grafana.com>
* remove FB VB and xor dod encoding because we won't use it
Signed-off-by: Dieter Plaetinck <dieter@grafana.com>
* HistoChunk metadata encoding
Signed-off-by: Dieter Plaetinck <dieter@grafana.com>
* add SparseHistogram.Copy()
Signed-off-by: Dieter Plaetinck <dieter@grafana.com>
* histogram test: test appending a few histograms
Signed-off-by: Dieter Plaetinck <dieter@grafana.com>
* add license headers
Signed-off-by: Dieter Plaetinck <dieter@grafana.com>