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https://issues.apache.org/jira/browse/HADOOP-6871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arvind Prabhakar updated HADOOP-6871:
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Attachment: HADOOP-6871-1.patch
Removed the whitespace formatting as that may have caused the javadoc warning
from the previous automated test build.
> When the value of a configuration key is set to its unresolved form, it
> causes the IllegalStateException in Configuration.get() stating that
> substitution depth is too large.
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-6871
> URL: https://issues.apache.org/jira/browse/HADOOP-6871
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Reporter: Arvind Prabhakar
> Attachments: HADOOP-6871-1.patch, HADOOP-6871.patch
>
>
> When a configuration value is set to its unresolved expression string, it
> leads to recursive substitution attempts in
> {{Configuration.substituteVars(String)}} method until the max substitution
> check kicks in and raises an IllegalStateException indicating that the
> substitution depth is too large. For example, the configuration key
> "{{foobar}}" with a value set to "{{$\{foobar\}}}" will cause this behavior.
> While this is not a usual use case, it can happen in build environments where
> a property value is not specified and yet being passed into the test
> mechanism leading to failures due to this limitation.
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