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James Taylor commented on PHOENIX-4724: --------------------------------------- +1. Excellent work, [~vincentpoon] ! > Efficient Equi-Depth histogram for streaming data > ------------------------------------------------- > > Key: PHOENIX-4724 > URL: https://issues.apache.org/jira/browse/PHOENIX-4724 > Project: Phoenix > Issue Type: Sub-task > Affects Versions: 4.15.0 > Reporter: Vincent Poon > Assignee: Vincent Poon > Priority: Major > Attachments: PHOENIX-4724.v1.patch, PHOENIX-4724.v2.patch > > > Equi-Depth histogram from > http://web.cs.ucla.edu/~zaniolo/papers/Histogram-EDBT2011-CamReady.pdf, but > without the sliding window - we assume a single window over the entire data > set. > Used to generate the bucket boundaries of a histogram where each bucket has > the same # of items. > This is useful, for example, for pre-splitting an index table, by feeding in > data from the indexed column. > Works on streaming data - the histogram is dynamically updated for each new > value. -- This message was sent by Atlassian JIRA (v7.6.3#76005)