[IMPALA-1443] Issue descriptive message when query cancelled

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Cannot Reproduce
• Affects Version/s: Impala 2.0
• Component/s: Clients
• Labels: ramp-up shell
• Environment: CDH 4
• Target Version: Product Backlog
• Assignee: Unassigned
• Reporter: John Russell
• Created: 03/Nov/14 19:58
• Updated: 19/Jun/17 18:47
• Resolved: 19/Jun/17 18:47

Description

If I cancel a running query from the :25000/queries web UI, the result in impala-shell looks like:

[localhost:21000] > select count(*) from billion_parquet;
Application Exception : Default TException.

Could we have a message that says the query was cancelled, or if there are multiple potential reasons for a 'TException' at least mention cancellation as a possibility? 'TException' seems like too much of an implementation detail to expose to end users in this case.