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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10584) Allow long-running Mover tool to login with keytab
Date Wed, 10 Aug 2016 12:41:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15415211#comment-15415211
] 

Zhe Zhang commented on HDFS-10584:
----------------------------------

Sorry about the delay.

The main patch LGTM. A few comments on the test:
# Private methods {{testWithinSameNode}} and {{initSecureConf}} should be above the public
test using them
# Misspell "successfull"
# I don't understand the below sleep:
{code}
      // Wait till namenode notified
      Thread.sleep(3000);
{code}
Should the successful return of {{Mover#run}} indicate all blocks have been moved to specified
storage type?

> Allow long-running Mover tool to login with keytab
> --------------------------------------------------
>
>                 Key: HDFS-10584
>                 URL: https://issues.apache.org/jira/browse/HDFS-10584
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: balancer & mover
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>         Attachments: HDFS-10584-00.patch, HDFS-10584-01.patch
>
>
> The idea of this jira is to support {{mover}} tool the ability to login from a keytab.
That way, the RPC client would re-login from the keytab after expiration, which means the
process could remain authenticated indefinitely. With some people wanting to run mover non-stop
in "daemon mode", that might be a reasonable feature to add. Recently balancer has been enhanced
using this feature.
> Thanks [~zhz] for the offline discussions.



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