[GitHub] Myasuka opened a new pull request #6638: [FLINK-10267][State] Fix arbitrary iterator access on RocksDBMapIterator

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

Myasuka opened a new pull request #6638: [FLINK-10267][State] Fix arbitrary iterator access on RocksDBMapIterator
URL: https://github.com/apache/flink/pull/6638
 
 
   ## What is the purpose of the change
   
   This pull request fix the arbitrary iterator access on RocksDBMapIterator to avoid unexpected exception.
   
   ## Brief change log
   
   Fix the `RocksDBMapIterator#loadCache()` logical to add not-removed `lastEntry` as the first entry in `cacheEntries`. 
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
     - Added unit test for `StateBackendTestBase#testMapState()`
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency):  no
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): don't know
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature?  no
   

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