[HIVE-10159] HashTableSinkDesc and MapJoinDesc keyTblDesc can be replaced by JoinDesc.keyTableDesc

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Component/s: Query Planning
• Assignee: Alexander Pivovarov
• Reporter: Alexander Pivovarov
• Created: 31/Mar/15 05:55
• Updated: 06/Apr/15 19:22
• Resolved: 06/Apr/15 19:22

Description

MapJoinDesc and HashTableSinkDesc are derived from JoinDesc
HashTableSinkDesc and MapJoinDesc have keyTblDesc field.
JoinDesc has keyTableDesc field.

I think HashTableSinkDesc and MapJoinDesc can use superclass (JoinDesc) keyTableDesc field instead of defining their own keyTblDesc.

Issue Links

• relates to: HIVE-964 handle skewed keys for a join in a separate job
• links to: https://reviews.apache.org/r/32679/