[jira] [Commented] (HADOOP-13155) Implement TokenRenewer in KMS and HttpFS

["Xiao Chen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-13155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15284837#comment-15284837 ] 

Xiao Chen commented on HADOOP-13155:
------------------------------------

Ping [~tucu00] and [~asuresh] for advice. Am I correct that we're missing the hook?

I see {{AuthenticationFilter#doFilter}} can handle DT operation requests using its {{authHandler}}. So I imagine we can just add renewer implementations to call {{DelegationTokenAuthenticatedURL#renewDelegationToken}}.

> Implement TokenRenewer in KMS and HttpFS
> ----------------------------------------
>
>                 Key: HADOOP-13155
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13155
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>
> DelegationToken is done in Yarn by {{DelegationTokenRenewer}}, where it calls {{Token#renew}} and uses ServiceLoader to get 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])
> We seem to miss the token renewer class in KMS/HttpFSFileSystem, and hence Yarn defaults to {{TrivialRenewer}} for DT of these kinds, resulting in the token not 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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