xuefuz commented on issue #8314: [FLINK-12365][table] Add stats related catalog APIs URL: https://github.com/apache/flink/pull/8314#issuecomment-488133623 I updated the PR with the following reworking: 1. Modified CatalogColumnStatistics class to enclose statistical info of all columns for a table/partition. 2. Added CatalogColumnStatisticsDataBase as a base class for column stats values that can be subclassed for different data types. 3. Added two stats value types, boolean and long, as examples. More types will be added in followup JIRAs. 4. Return "unknown" stats for GenericInMemoryCatalog when stats are not available for a table/partition. 5. Modfied tests and test utils accordingly.
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