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Zheng Shao commented on HIVE-1032: ---------------------------------- TaskInfo class still has the field "isMapTask" that is not used anyway. Shall we remove it? > Better Error Messages for Execution Errors > ------------------------------------------ > > 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 > Attachments: HIVE-1032.1.patch, HIVE-1032.2.patch, HIVE-1032.3.patch, > HIVE-1032.4.patch > > > 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. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.