JingsongLi opened a new pull request #11199: [FLINK-16161][hive] Statistics zero should be unknown in HiveCatalog URL: https://github.com/apache/flink/pull/11199 ## What is the purpose of the change In hive, treat statistics zero as unknown, but in Flink HiveCatalog, treat zero as real value. This lead wrong inputs to CBO. Previous discussed in https://github.com/apache/flink/pull/10380 ## Brief change log Fix in `HiveCatalog`. treat zero as unknown value. ## Verifying this change `HiveCatalogHiveMetadataTest.testHiveStatistics` ## 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, Kubernetes/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**)
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