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https://issues.apache.org/jira/browse/SAMZA-929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16501423#comment-16501423
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ASF GitHub Bot commented on SAMZA-929:
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GitHub user apoorva121 opened a pull request:
https://github.com/apache/samza/pull/544
SAMZA-929 : Set initialDelay in tokenRenewExecutor schedule to 0
Changed initialDelay in tokenRenewExecutor scheduler to 0 so that it can
re-login using the keytab as soon as the application master container starts.
This way even if application master restarts after the delegation token in
launcher context has expired, it will be able to use the new token to launch
other containers.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apoorva121/samza master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/samza/pull/544.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #544
----
commit 58ba046661dc45bd0a254aebe6e4e946267dc607
Author: Apoorva Sareen <asareen@...>
Date: 2018-06-05T07:33:42Z
SAMZA-929 : Set initialDelay in tokenRenewExecutor schedule to 0
----
> Support AM restart in Kerberos secured YARN after the original token in
> launch context expires
> ----------------------------------------------------------------------------------------------
>
> Key: SAMZA-929
> URL: https://issues.apache.org/jira/browse/SAMZA-929
> Project: Samza
> Issue Type: Sub-task
> Components: yarn
> Reporter: Yi Pan (Data Infrastructure)
> Assignee: Chen Song
> Priority: Major
>
> In Kerberos secured YARN cluster, an initial token is given in the launch
> context to RM for a job. When that token expires, RM will not be able to
> restart failed AM. As for now, we will have to re-submit the job to refresh
> the token in the launch context.
> This ticket is searching for a solution that can refresh the token in the
> launch context for AM.
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