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### What changes were proposed in this pull request? There are no partition Commands, such as AlterTableAddPartition supported in DatasourceV2, it is widely used in mysql or hive or other datasources. Thus it is necessary to defined Partition API to support these Commands. We defined the partition API as part of Table API, as it will change table data sometimes. And a partition is composed of identifier and properties, while identifier is defined with InternalRow and properties is defined as a Map. ### Does this PR introduce _any_ user-facing change? Yes. This PR will enable user to use some partition commands ### How was this patch tested? run all tests and add some partition api tests Closes #28617 from stczwd/SPARK-31694. Authored-by: stczwd <qcsd2011@163.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> |
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