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Date: Wed, 1 Jun 2016 01:07:12 +0000 (UTC)
From: "Allen Wittenauer (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.12970067.1463418194000.344655.1464743232918@Atlassian.JIRA>
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Subject: [jira] [Commented] (HADOOP-13155) Implement TokenRenewer to renew
 and cancel delegation tokens in KMS
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archived-at: Wed, 01 Jun 2016 01:07:14 -0000


    [ https://issues.apache.org/jira/browse/HADOOP-13155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309003#comment-15309003 ] 

Allen Wittenauer commented on HADOOP-13155:
-------------------------------------------

We should make sure this works with hadoop dtutil.

> Implement TokenRenewer to renew and cancel delegation tokens in KMS
> -------------------------------------------------------------------
>
>                 Key: HADOOP-13155
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13155
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>         Attachments: HADOOP-13155.01.patch, HADOOP-13155.02.patch, HADOOP-13155.03.patch, HADOOP-13155.04.patch, HADOOP-13155.05.patch, HADOOP-13155.06.patch, HADOOP-13155.pre.patch
>
>
> Service DelegationToken (DT) renewal is done in Yarn by {{org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer}}, where it calls {{Token#renew}} and uses ServiceLoader to find the renewer class ([code|https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/Token.java#L382]), and invokes the renew method from it.
> We seem to miss the token renewer class in KMS / HttpFSFileSystem, and hence Yarn defaults to {{TrivialRenewer}} for DT of such kinds, resulting in the token not being renewed.
> As a side note, {{HttpFSFileSystem}} does have a {{renewDelegationToken}} API, but I don't see it invoked in hadoop code base. KMS does not have any renew hook.


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