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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-1032) Better Error Messages for Execution Errors
Date Tue, 19 Jan 2010 20:10:54 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12802448#action_12802448
] 

Zheng Shao commented on HIVE-1032:
----------------------------------

Another error that we might want to include in the same patch.

The solution for this error is: "Data file split hdfs://dfs:9000/user/hive/warehouse/mytable/ds=2009-10-04/part-00232,
range: 0-0 is corrupted".

{code}
2010-01-19 11:53:30,581 INFO org.apache.hadoop.mapred.MapTask: split: hdfs://dfs:9000/user/hive/warehouse/mytable/ds=2009-10-04/part-00232,
range: 0-0
2010-01-19 11:53:30,795 WARN org.apache.hadoop.mapred.Child: Error running child
java.io.EOFException
	at java.io.DataInputStream.readFully(DataInputStream.java:180)
	at java.io.DataInputStream.readFully(DataInputStream.java:152)
	at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1450)
	at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1428)
	at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1417)
	at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1412)
	at org.apache.hadoop.mapred.SequenceFileRecordReader.<init>(SequenceFileRecordReader.java:43)
	at org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:63)
	at org.apache.hadoop.hive.ql.io.HiveInputFormat.getRecordReader(HiveInputFormat.java:236)
	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:338)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
	at org.apache.hadoop.mapred.Child.main(Child.java:159)
2010-01-19 11:53:30,801 INFO org.apache.hadoop.mapred.Task: Runnning cleanup for the task
{code}


> 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
>
>
> 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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