JingsongLi opened a new pull request #10170: [FLINK-14722][hadoop] Optimize mapred.HadoopInputSplit to not serialize conf when split is not configurable URL: https://github.com/apache/flink/pull/10170 ## What is the purpose of the change JobConf may very big, contains hundreds of configurations, if it is serialized by every split, that will significantly reduce performance. Consider thousands of splits, the akka thread of JobMaster will all on the serialization of conf. That may will lead to various akka timeouts too. ## Brief change log In HadoopInputSplit, not serialize conf when split is not configurable. This will remove the getConf method. ## Verifying this change This change is a code cleanup without any test coverage. ## 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? no
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