[FLINK-17302] Add multiget() interface for state of rocksdb statebackend

• Type: Improvement
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: 1.10.0
• Component/s: Runtime / State Backends
• Labels: auto-deprioritized-major auto-deprioritized-minor
• Assignee: Unassigned
• Reporter: Peidian Li
• Created: 21/Apr/20 09:51
• Updated: 23/Mar/22 07:33

Description

Users that need to lookup many keys in order to process an application level request end up calling Get() in a loop to read the required KVs. Rocksdb provides multiget() interface to improve reading efficiency.Do we consider providing multiget() interface for rocksdb statebackend ？

See also https://github.com/facebook/rocksdb/wiki/MultiGet-Performance.

For other statebackend, we can call the get () interface in a loop  to implement multiget().