Dayue Gao created KYLIN-2443:
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Summary: Report coprocessor error information back to client
Key: KYLIN-2443
URL: https://issues.apache.org/jira/browse/KYLIN-2443
Project: Kylin
Issue Type: Improvement
Components: Storage - HBase
Affects Versions: v1.6.0
Reporter: Dayue Gao
Assignee: Dayue Gao
When query aborts in coprocessor, the current error message (list below)
doesn't carry any concrete reason. User has to check regionserver's log in
order to figure out what's happening, which is a tedious work and not always
possible in a cloud environment.
{noformat}
<sub-thread for Query 4fb68974-de70-4f6e-a2ee-7048202e51a7 GTScanRequest
4d65f9bf>The coprocessor thread stopped itself due to scan timeout or scan
threshold(check region server log), failing current query...
{noformat}
It would be better to report error message to client.
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