Feifan Wang created FLINK-27841:
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Summary: RocksDB cache miss increase in 1.15
Key: FLINK-27841
URL: https://issues.apache.org/jira/browse/FLINK-27841
Project: Flink
Issue Type: Improvement
Components: Runtime / State Backends
Affects Versions: 1.15.0
Reporter: Feifan Wang
Attachments: image-2022-05-31-00-21-49-338.png,
image-2022-05-31-00-22-45-123.png
I run same job with 1.12.2 and 1.15.0 , find that cpu busy much higher than
1.12. After careful comparison, I find higher cache miss in 1.15. But block
cache size is same. Is this as expected ?
I know RocksDB version in 1.15 is 6.20.3 and 1.12 is 5.17.2, is this just
caused by different versions of RocksDB ?
!image-2022-05-31-00-21-49-338.png|width=599,height=146!
!image-2022-05-31-00-22-45-123.png|width=594,height=175!
test information:
job type : regular join
parallelism : 160
TaskManager memory : 32G
num of TaskManager : 10
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