Better Error Messages for Execution Errors
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Key: HIVE-1032
URL: https://issues.apache.org/jira/browse/HIVE-1032
Project: Hadoop Hive
Issue Type: New Feature
Components: Query Processor
Reporter: Paul Yang
Assignee: Paul Yang
Three common errors that occur during execution are:
1. Map-side group-by causing an out of memory exception due to large
aggregation hash tables
2. ScriptOperator failing due to the user's script throwing an exception or
otherwise returning a non-zero error code
3. Incorrectly specifying the join order of small and large tables, causing the
large table to be loaded into memory and producing an out of memory exception.
These errors are typically discovered by manually examining the error log files
of the failed task. This task proposes to create a feature that would
automatically read the error logs and output a probable cause and solution to
the command line.
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