Miklos Gergely created HIVE-21959:
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Summary: Clean up Concatenate and Msck DDL commands
Key: HIVE-21959
URL: https://issues.apache.org/jira/browse/HIVE-21959
Project: Hive
Issue Type: Sub-task
Components: Hive
Affects Versions: 3.1.1
Reporter: Miklos Gergely
Assignee: Miklos Gergely
Fix For: 4.0.0
Concatenate and Msck DDL use basic data structure implementations instead of
their interfaces for variable declaration, like ArrayList instead of List,
LinkedHashMap instead of Map, etc. This is due to a lot of similar issues in
the code, which needs to be cleaned.
Concatenate also had a non-immutable Desc class, that needs to be transformed
into an immutable one. Concatenate operation code should be cut into smaller
functions.
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