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https://issues.apache.org/jira/browse/KNOX-1054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phil Zampino updated KNOX-1054:
-------------------------------
Attachment: KNOX-1054.patch
Applied the synchronized modifier to all methods that interact with the *urls*
(ConcurrentLinkedQueue) member.
> DefaultURLManager is not thread-safe
> ------------------------------------
>
> Key: KNOX-1054
> URL: https://issues.apache.org/jira/browse/KNOX-1054
> Project: Apache Knox
> Issue Type: Bug
> Components: Server
> Affects Versions: 0.13.0
> Reporter: Phil Zampino
> Assignee: Phil Zampino
> Attachments: KNOX-1054.patch
>
>
> org.apache.hadoop.gateway.ha.provider.impl.DefaultURLManager is not
> thread-safe.
> Currently, only the "write" methods are subject to locking. Apparently, there
> are some assumptions being made about the behavior of the underlying
> ConcurrentLinkedQueue.
> For instance, if a thread is preempted in setActiveURL(String), and another
> thread invokes getActiveURL(), the urls.peek() result could be incorrect.
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