Open cyliu0 opened 4 months ago
The amplification is high.
The memtable spilling does not happen too frequently.
Is memtable spilling expected to solve this kind of high-amplification case?
cc: @cyliu0 @fuyufjh I think this level of amplification is not common, so I removed the "block" label.
But is this expected to be solved right now? I am uncertain but we need to have a conclusion and fix it.
But I think we need to sort this out as one of our users did encounter bad performance when the amplification was high
High amplification cases do exist
Describe the bug
https://buildkite.com/risingwave-test/ch-benchmark-pg-cdc-shared-source/builds/55#018f749e-d8ac-4e2a-a905-25038438f9f0 https://buildkite.com/risingwave-test/ch-benchmark-mysql-cdc-shared-source/builds/66#018f74a0-1ec8-4a62-8b65-61fda243cad7
https://grafana.test.risingwave-cloud.xyz/d/EpkBw5W4k/risingwave-dev-dashboard?from=1715648701806&orgId=1&to=1715655520239&var-component=All&var-datasource=P2453400D1763B4D9&var-instance=benchmark-risingwave&var-namespace=tpc-20240514-010410&var-pod=All&var-table=All
Error message/log
No response
To Reproduce
No response
Expected behavior
No response
How did you deploy RisingWave?
No response
The version of RisingWave
v1.9.0-rc-1
Additional context
No response