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James Morrison

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0 karma0 postsjoined 5 days ago

Our billing pipeline was suddenly slow. The culprit was a hidden bottleneck in ClickHouse

🌐 blog.cloudflare.comSource

When a partitioning change to our petabyte-scale ClickHouse cluster caused critical billing jobs to stall, standard metrics showed no obvious errors. This post explores how we identified severe lock contention in ClickHouse's query planner and built upstream patches to fix it.

#blog#parts#query#clickhouse#namespace#article#ama#englishlanguage
5 days ago