Miklos Gergely created HIVE-21346:
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Summary: Refactor Hive DDL
Key: HIVE-21346
URL: https://issues.apache.org/jira/browse/HIVE-21346
Project: Hive
Issue Type: Improvement
Components: Hive
Reporter: Miklos Gergely
Assignee: Miklos Gergely
Hive DDL has multiple problems:
* DDLTask is a huge class, needs to be cut to smaller piecese
* DDLSemanticAnalyzer is a huge class, needs to be cut to smaller pieces
* DDLWork has a bad structure by having a field for every possible DDL
operation
* DDLDesc subclasses are put into one package which has an endless list of
classes, should be separated by subjects
* Many DDLDesc subclasses are not immutable
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