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https://issues.apache.org/jira/browse/HADOOP-13500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16976369#comment-16976369
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Yuxuan Wang commented on HADOOP-13500:
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Hi, is someone still work on this? And I want to know if there is a definition
how thread-safe the class Configuration is?
> Concurrency issues when using Configuration iterator
> ----------------------------------------------------
>
> Key: HADOOP-13500
> URL: https://issues.apache.org/jira/browse/HADOOP-13500
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Reporter: Jason Darrell Lowe
> Priority: Major
>
> It is possible to encounter a ConcurrentModificationException while trying to
> iterate a Configuration object. The iterator method tries to walk the
> underlying Property object without proper synchronization, so another thread
> simultaneously calling the set method can trigger it.
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