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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2589) unnecessary hftp token fetch and renewal thread
Date Wed, 23 Nov 2011 19:37:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13156217#comment-13156217

Hadoop QA commented on HDFS-2589:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    -1 patch.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1607//console

This message is automatically generated.
> unnecessary hftp token fetch and renewal thread
> -----------------------------------------------
>                 Key: HDFS-2589
>                 URL: https://issues.apache.org/jira/browse/HDFS-2589
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: security
>    Affects Versions:
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HDFS-2589.patch
> Instantiation of the hftp filesystem is causing a token to be implicitly created and
added to a custom token renewal thread.  With the new token renewal feature in the JT, this
causes the mapreduce {{obtainTokensForNamenodes}} to fetch two tokens (an implicit and uncancelled
token, and an explicit token) and leave a spurious renewal thread running.  This thread should
not be running in the JT.
> After speaking with Owen, the quick solution is to lazy fetch the token, and to lazy
start the renewer thread.

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