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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2790) NM can't aggregate logs past HDFS delegation token expiry.
Date Sat, 01 Nov 2014 19:30:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14193384#comment-14193384

Vinod Kumar Vavilapalli commented on YARN-2790:

bq. localization happens only once for each container and log-agregation happens only at the
end of the regular app (or on log rolling interval). the sole reason is for easier debugging,
I can change them to debug if you think it's an issue.
Say by default, after the 7th day, for every app, for every localization and log-aggregation,
we print the log message about new system-credentials, right?

bq. Do you mean remove from RM ? DelegationTokenRenewer#removeApplicationFromRenewal does
I missed that. Tx, we are good here.

> NM can't aggregate logs past HDFS delegation token expiry.
> ----------------------------------------------------------
>                 Key: YARN-2790
>                 URL: https://issues.apache.org/jira/browse/YARN-2790
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.6.0
>            Reporter: Tassapol Athiapinya
>            Assignee: Jian He
>         Attachments: YARN-2790.1.patch
> We shorten hdfs delegation token lifetime, set RM to act as as a proxy user in order
to be able to renew the token on behalf of a user submitting the application. Still we see
NM log aggregation fail due to token expiry error.
> {code}
> 2014-10-31 00:11:56,579 INFO  logaggregation.AppLogAggregatorImpl (AppLogAggregatorImpl.java:finishLogAggregation(481))
- Application just finished : application_1414705229376_0004
> 2014-10-31 00:11:56,588 WARN  ipc.Client (Client.java:run(675)) - Exception encountered
while connecting to the server : org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.token.SecretManager$InvalidToken):
token (HDFS_DELEGATION_TOKEN token 75 for user1) is expired
> 2014-10-31 00:11:56,589 ERROR logaggregation.AppLogAggregatorImpl (AppLogAggregatorImpl.java:uploadLogsForContainers(233))
- Cannot create writer for app application_1414705229376_0004. Skip log upload this time.
> {code}

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