Dieter Plaetinck 4d27816ea5 Sparsehistogram: improve dod encoding, testing, encode chunk metadata (#9015) ... * 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>		2021-06-30 16:15:43 +05:30
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format	Sparsehistogram: improve dod encoding, testing, encode chunk metadata (#9015)	2021-06-30 16:15:43 +05:30