Sahil Takiar created IMPALA-9138:
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Summary: Classify certain errors as retryable
Key: IMPALA-9138
URL: https://issues.apache.org/jira/browse/IMPALA-9138
Project: IMPALA
Issue Type: Sub-task
Components: Backend
Reporter: Sahil Takiar
Assignee: Sahil Takiar
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.
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