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Posted to dev@flink.apache.org by "Yun Tang (Jira)" <ji...@apache.org> on 2021/03/11 16:17:00 UTC
[jira] [Created] (FLINK-21736) Introduce latency tracking state
Yun Tang created FLINK-21736:
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Summary: Introduce latency tracking state
Key: FLINK-21736
URL: https://issues.apache.org/jira/browse/FLINK-21736
Project: Flink
Issue Type: New Feature
Components: Runtime / State Backends
Reporter: Yun Tang
Assignee: Yun Tang
Fix For: 1.13.0
This ticket is extended from FLINK-16444 which wants to track latency of RocksDB options. However previous ticket has two problems:
# Cannot apply to heap based state backend and other user customized state backend.
# User need background knowledge to know what RocksDB operation corresponding to what state operation, e.g RocksDB adoptsĀ {{merge}} to act as listState#add.
Thus, I prefer to introduce latency tracking state wrapper to detect the access latency. And to not impact the original state access, I would still use sample interval as previousĀ FLINK-16444 did.
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