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https://issues.apache.org/jira/browse/HADOOP-4955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12666804#action_12666804
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Kevin Peterson commented on HADOOP-4955:
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I will incorporate Enis's comments into patch this weekend.
> Make DBOutputFormat us column names from setOutput(...)
> -------------------------------------------------------
>
> Key: HADOOP-4955
> URL: https://issues.apache.org/jira/browse/HADOOP-4955
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.19.0
> Environment: Ubuntu 8.04, Java 6, MySQL 5.0 (most likely not relevant)
> Reporter: Kevin Peterson
> Attachments: patch.txt
>
>
> In org.apache.hadoop.mapred.lib.db.DBOutputFormat, the supplied names of the
> columns are not used for inserting values. The column names supplied to
> DBOutputFormat.setOutput(JobConf, String, String...) are used to determine
> the number of values to insert, but the order is dictated by the table
> definition of the underlying database. This affects the correct indices for
> DBWritable.write(PreparedStatement).
> I will attach a patch that correctly maps these values.
> I am characterizing this as a bug rather than an improvement because there
> may be existing code which implicitly relied on DBOutputFormat ignoring the
> supplied table names.
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