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https://issues.apache.org/jira/browse/HADOOP-5525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683817#action_12683817
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Amareshwari Sriramadasu commented on HADOOP-5525:
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bq. If a thread throws an uncaught exception and dies, will it be in the state 
TERMINATED ?
yes

> Provide a way to query job tracker about its daemon thread's status
> -------------------------------------------------------------------
>
>                 Key: HADOOP-5525
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5525
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: mapred
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.21.0
>
>
> Admin needs to know the status of all threads in JobTracker (whether they are 
> alive or not) at any point of time. This helps alot in debugging crashes.

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