Presto Infrastructure at Lyft
OverviewEarly in 2017 we started exploring Presto for OLAP use cases and we realized the potential of this amazing query engine. It started as an adhoc querying tool for data engineers and analysts to run SQL in a faster way to prototype their queries, when compared to Apache Hive. A lot of internal dashboards were powered by AWS-Redshift back then and it had data storage and compute coupled toget
HyperLogLog in Presto: Faster cardinality estimation - Facebook Code
HyperLogLog in Presto: A significantly faster way to handle cardinality estimation WindForce - Turbulence X Scale, by Alvaro Moreira and Particle Skull: https://vimeo.com/94061802, CC-BY-3.0. Computing the count of distinct elements in massive data sets is often necessary but computationally intensive. Say you need to determine the number of distinct people visiting Facebook in the past week using
1
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
処理を実行中です
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
