Todd Lipcon created KUDU-1587:
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Summary: Memory-based backpressure is insufficient on seek-bound
workloads
Key: KUDU-1587
URL: https://issues.apache.org/jira/browse/KUDU-1587
Project: Kudu
Issue Type: Bug
Components: tserver
Affects Versions: 0.10.0
Reporter: Todd Lipcon
Priority: Critical
I pushed a uniform random insert workload from a bunch of clients to the point
that the vast majority of bloom filters no longer fit in buffer cache, and the
compaction had fallen way behind. Thus, every inserted row turns into 40+ seeks
(due to non-compact data) and takes 400-500ms. In this kind of workload, the
current backpressure (based on memory usage) is insufficient to prevent
ridiculously long queues.
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