[IMPALA-9138] Classify certain errors as retryable

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: Backend
• Epic Color: ghx-label-3
• Assignee: Sahil Takiar
• Reporter: Sahil Takiar
• Created: 08/Nov/19 18:40
• Updated: 24/Feb/20 21:30
• Resolved: 24/Feb/20 21:30

Description

Impala should be able to classify certain errors as "retryable". This can be done by modifying the TStatus object to have a "type". For now, the only types can be "GENERAL" and "RETRYABLE". This way when a TStatus object is created, it can be marked as retryable. If the TStatus is retryable, the Coordinator can trigger a retry of the query.

This approach allows us to incrementally mark more and more errors as retryable as necessary. For now, just RPC failures will be marked as retryable.

Issue Links

• is related to: IMPALA-8714 Metrics for tracking query failure reasons