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https://issues.apache.org/jira/browse/GEARPUMP-355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16213475#comment-16213475
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ASF GitHub Bot commented on GEARPUMP-355:
-----------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/incubator-gearpump/pull/231
> AppMasterResolver fails to run against a kerberized Hadoop cluster
> ------------------------------------------------------------------
>
> Key: GEARPUMP-355
> URL: https://issues.apache.org/jira/browse/GEARPUMP-355
> Project: Apache Gearpump
> Issue Type: Bug
> Components: security, yarn
> Affects Versions: 0.8.4
> Reporter: Timea Magyar
> Assignee: Timea Magyar
> Fix For: 0.8.5
>
>
> When trying to launch a Gearpump cluster in a kerberized Hadoop/Yarn
> environment, after the Application Master address has been resolved as a
> prerequisite, the YarnAppMaster (responsible for starting GearPump masters,
> workers, UI servers as Yarn containers) address (actor reference) must be
> obtained via Kerberos/Spnego. (Kerberos over http)
> The current implementation for this resides in the AppMasterResolver class
> and is using an apache http client (version 3.x) for establishing a
> connection to the Application Master and obtain the above YarnAppMaster actor
> reference. Since the apache http client does not support the negotiate
> authentication scheme in version 3.x (required for a connection over
> kerberos/spnego) this step will always fail in a kerberized Yarn/Hadoop
> cluster set-up.
> I tested this in a secured/kerberized CDH 5.7.5 environment. I would like to
> provide a patch for this by adapting the SPNEGO-enabled Hadoop web
> connection code from WebHDFS.
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