[IMPALA-11885] Support COPY TESTCASE statement for kudu tables

• Type: New Feature
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Component/s: Catalog, Frontend
• Labels: supportability
• Epic Color: ghx-label-7
• Assignee: Unassigned
• Reporter: Quanlong Huang
• Created: 31/Jan/23 12:41
• Updated: 28/Aug/24 07:56

Description

IMPALA-5872 introduces the COPY TESTCASE TO/FROM statements to collect required metadata of a query from a remote cluster. So we don't need to manually collect table/view schemas by SHOW CREATE TABLE statements. The metadata can be loaded and use to plan the original query.

However, kudu tables are not supported well. Not all the required metadata are collected since Impala doesn't cache the range partitions and tablet locations. We need to extend COPY TESTCASE TO statement to also collect these information.

We should also modify KuduScanNode to reuse these information when PLANNER_DEBUG_MODE=true.

Issue Links

• is related to: IMPALA-13339 Introduce the COPY TESTCASE statements
• relates to: IMPALA-5872 Implement a SQL test case builder for gathering query diagnostics