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https://issues.apache.org/jira/browse/OAK-3022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14597331#comment-14597331
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Francesco Mari commented on OAK-3022:
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The patch in OAK-2962 can be used to implement a solution for this issue.
> DocumentNodeStoreService fails to handle empty strings in the OSGi
> configuration
> --------------------------------------------------------------------------------
>
> Key: OAK-3022
> URL: https://issues.apache.org/jira/browse/OAK-3022
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core
> Reporter: Francesco Mari
>
> When an OSGi configuration property is removed from the dictionary associated
> to a component, the default value assigned to it is an empty string.
> When such an empty string is processed by {{DocumentNodeStoreService#prop}},
> it is returned to its caller as a valid configuration value. The callers of
> {{DocumentNodeStoreService#prop}}, instead, expect {{null}} when such an
> empty value is found.
> The method {{DocumentNodeStoreService#prop}} should check for empty strings
> in the OSGi configuration, and treat them as {{null}} values.
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