Improve error messages emitted during task execution
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Key: HIVE-2156
URL: https://issues.apache.org/jira/browse/HIVE-2156
Project: Hive
Issue Type: Improvement
Reporter: Syed S. Albiz
Follow-up to HIVE-1731
A number of issues were related to reporting errors from task execution and
surfacing these in a more useful form.
Currently a cryptic message with "Execution Error" and a return code and class
name of the task is emitted.
The most useful log messages here are emitted to the local logs, which can be
found through jobtracker. Having either a pointer to these logs as part of the
error message or the actual content would improve the usefulness substantially.
It may also warrant looking into how the underlying error reporting through
Hadoop is done and if more information can be propagated up from there.
Specific issues raised in HIVE-1731:
FAILED: Execution Error, return code 2 from
org.apache.hadoop.hive.ql.exec.MapRedTask
* issue was in regexp_extract syntax
FAILED: Execution Error, return code 1 from
org.apache.hadoop.hive.ql.exec.DDLTask
* tried: desc table_does_not_exist;
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