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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2213) DataNode gets stuck while shutting down minicluster
Date Tue, 02 Aug 2011 11:41:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13076141#comment-13076141

Steve Loughran commented on HDFS-2213:

Jetty is spinning waiting for its threads to exit; you can specify a timeout there (which
I never knew before), and which it is probably worth doing. But it doesn't address the issue
that some jetty thread isn't responding to interrupts -either its blocked or its swallowing
interrupt exceptions

> DataNode gets stuck while shutting down minicluster
> ---------------------------------------------------
>                 Key: HDFS-2213
>                 URL: https://issues.apache.org/jira/browse/HDFS-2213
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>             Fix For: 0.23.0
>         Attachments: stack.txt
> I've seen a couple times where a unit test has timed out. jstacking shows the cluster
is stuck trying to shut down one of the DataNode HTTP servers. The DataNodeBlockScanner thread
also seems to be in a tight loop in its main loop.

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