[GitHub] [flink] Aitozi opened a new pull request #8421: [FLINK-12492]Minor optimize the cep operator by avoiding unnecessary copy

[GitBox <gi...@apache.org>]

Aitozi opened a new pull request #8421: [FLINK-12492]Minor optimize the cep operator by avoiding unnecessary copy
URL: https://github.com/apache/flink/pull/8421
 
 
   ## What is the purpose of the change
   
   When use with rocksdbbackend, we can skip the copy of input events. But to make this more constraint, i add a method in the KeyedStateBackend interface to make this still work id there is added a new backend.
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (yes / **no**)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**)
     - The serializers: (yes / **no** / don't know)
     - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
     - The S3 file system connector: (yes / **no** / don't know)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes / **no**)
     - If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)
   

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