[GitHub] [iceberg] pvary commented on issue #3247: Is alter table supported or not in iceberg-hive?

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

pvary commented on issue #3247:
URL: https://github.com/apache/iceberg/issues/3247#issuecomment-938539818


   There are some missing feature in the Hive API. Especially in 2.x, but even in 3.x which prevented us to provide alter table support for Hive tables in Iceberg code.
   
   That said there is an implementation in the Hive master which allows some of the `ALTER` functionality.
   https://github.com/apache/hive/blob/master/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergMetaHook.java#L96-L99
   ```
     static final EnumSet<AlterTableType> SUPPORTED_ALTER_OPS = EnumSet.of(
         AlterTableType.ADDCOLS, AlterTableType.REPLACE_COLUMNS, AlterTableType.RENAME_COLUMN,
         AlterTableType.ADDPROPS, AlterTableType.DROPPROPS, AlterTableType.SETPARTITIONSPEC,
         AlterTableType.UPDATE_COLUMNS);
   ```


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