For educational reasons I've decided to create my own CA. Here is what I learned.
Lets get some context first.
Thank you for extending an invitation to speak at HighLoad++. I | |
sincerely appreciate your consideration. | |
I am an outspoken advocate for LGBTQ equality; this position is deeply | |
woven into my work. Clojure From The Ground Up is adamantly | |
LGBT-inclusive. Jepsen is named after a gay pop anthem and includes | |
dozens of references to same-sex relationships and trans identities. My | |
talk slides are populated with bearded nuns, genderqueer punks, and | |
trans hackers. My twitter feed is about as gay as it is possible to get. |
Three comparison points: | |
Presto + RCFile vs Impala + RCFile vs Impala + Parquet | |
Note: Query time, CPU utilization, Disk read tput (KBRead) | |
Impala v1.1.1 | |
Presto v0.52 | |
================================================================================================================================ | |
Presto + RCFile: | |
select ss_sold_date_sk, count(*) from store_sales_rcfile group by 1 order by 1 limit 2000; |