[IMPALA-9487] SHOW and DESCRIBE statements should display EC policies

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 4.3.0
• Component/s: Frontend
• Labels: observability
• Epic Color: ghx-label-1
• Assignee: Michael Smith
• Reporter: Sahil Takiar
• Created: 11/Mar/20 20:34
• Updated: 14/Dec/22 23:51
• Resolved: 14/Dec/22 22:37

Description

Since EC policies can be set per-file, the show files command should display if a file is an EC file, and what the EC policy is.

EC policies can be set on a table level directory, so it would be useful if describe extended [table-name] indicated if the table had an EC policy set or not.

For partitioned tables, show partitions should list out the EC policy of each partition directory (we already do something similar for HDFS cacheing).