[GitHub] sjwiesman opened a new pull request #6814: [FLINK-10423][rocksdb][metrics] rocksdb native metrics monitor

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

sjwiesman opened a new pull request #6814: [FLINK-10423][rocksdb][metrics] rocksdb native metrics monitor
URL: https://github.com/apache/flink/pull/6814
 
 
   ## What is the purpose of the change
   Optionally expose RocksDB native metrics to Flink metrics reporter. All metrics are optionally configured using `OptionsFactory` report at the column family level and return unsigned long values. Metrics reporting is disabled by default to prevent unexpected performance regressions. 
   
   ## Brief change log
     - Implement RocksDBNativeMetricMonitor to periodically pull native metrics from RocksDB
     - Make metrics configurable through OptionsFactory 
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
   *(example:)*
     -  Added RocksDBNativeMetricTest
     - Manually verified with a test cluster
   
   ## 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): no
     - 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? yes
     - If yes, how is the feature documented? javadoc
   

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