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From: "Ivan A. Veselovsky (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HADOOP-9046) provide unit-test coverage of
 class org.apache.hadoop.fs.DelegationTokenRenewer.RenewAction<T>
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    [ https://issues.apache.org/jira/browse/HADOOP-9046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13504691#comment-13504691 ] 

Ivan A. Veselovsky commented on HADOOP-9046:
--------------------------------------------

Hi, Robert,
looks like I found the reason of delay: the main thread locks for long time when waiting to enter the synchronized method org.apache.hadoop.fs.DelegationTokenRenewer.removeRenewAction(T),
and this operation is invoked in StateSynchronizer *without* a timeout.   
I will update the patch when i fix this. 
Thanks a lot for this catch.
                
> provide unit-test coverage of class org.apache.hadoop.fs.DelegationTokenRenewer.RenewAction<T>
> ----------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-9046
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9046
>             Project: Hadoop Common
>          Issue Type: Test
>            Reporter: Ivan A. Veselovsky
>            Assignee: Ivan A. Veselovsky
>            Priority: Minor
>         Attachments: HADOOP-9046-branch-0.23-over-9049.patch, HADOOP-9046-branch-0.23.patch, HADOOP-9046-over-9049.patch, HADOOP-9046.patch
>
>
> The class org.apache.hadoop.fs.DelegationTokenRenewer.RenewAction<T> has zero coverage in entire cumulative test run. Provide test(s) to cover this class.
> Note: the request submitted to HDFS project because the class likely to be tested by tests in that project.

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