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A comment on Ask HN: How to run queries on 20B clicks log. Parent comment

Re:Ask HN: How to run queries on 20B clicks log by xstartup on Saturday November 11, 2017 @03:50PM (#15678110)
Have you actually deployed this in production? Last year, we had lots of issue with Druid. Do you know about clickhouse?
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Re:Ask HN: How to run queries on 20B clicks log by thisone on Sunday November 12, 2017 @11:21AM (#15681314)
can you write briefly about the issues you had with Druid? We've been looking at bringing it into out stack for our OLAP queries and aggregates and would appreciate a war story.
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