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https://issues.apache.org/jira/browse/HADOOP-1347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajagopal Natarajan updated HADOOP-1347:
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Attachment: unset.patch
If the value field is empty,
Check if the property corresponding to the empty value already exists in the
properties list.
If it exists, unset it(remove the property from the list)
> Configuration XML bug: empty values
> -----------------------------------
>
> Key: HADOOP-1347
> URL: https://issues.apache.org/jira/browse/HADOOP-1347
> Project: Hadoop
> Issue Type: Bug
> Components: conf
> Reporter: Eelco Lempsink
> Priority: Critical
> Attachments: unset.patch
>
>
> The configuration parser doesn't handle empty values well:
> if ("value".equals(field.getTagName()) && field.hasChildNodes())
> This logic makes it impossible to 'unset' a field when loading multiple
> configurations.
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