[IMPALA-3198] Store partition location info with respect to partition keys

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: impala 2.5.1
• Component/s: Catalog
• Target Version: Product Backlog
• Assignee: Unassigned
• Reporter: Jim Apple
• Created: 17/Mar/16 21:05
• Updated: 16/Apr/18 18:59

Description

Partitions in the Catalog already store the literals of their clustering columns. The tables also already store the clustering column names.

THis information is stored redundantly in partition location strings like "hdfs://db/table/part_col_1=part_val_1/part_col_2=part_val_2/". We could save catalog memory by reducing that redundancy.