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From "Gera Shegalov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-23155) YARN-aggregated executor/driver logs appear unavailable when NM is down
Date Fri, 01 Feb 2019 08:38:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-23155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16758102#comment-16758102
] 

Gera Shegalov commented on SPARK-23155:
---------------------------------------

[~kabhwan], [~vanzin] I would still be interested to be able to use the new mechanism with
the old logs. [https://github.com/apache/spark/pull/23720] is a quick draft to demo how we
could achieve this flexibly with named capture groups.

> YARN-aggregated executor/driver logs appear unavailable when NM is down
> -----------------------------------------------------------------------
>
>                 Key: SPARK-23155
>                 URL: https://issues.apache.org/jira/browse/SPARK-23155
>             Project: Spark
>          Issue Type: Improvement
>          Components: Deploy
>    Affects Versions: 2.2.1
>            Reporter: Gera Shegalov
>            Assignee: Jungtaek Lim
>            Priority: Major
>             Fix For: 3.0.0
>
>
> Unlike MapReduce JobHistory Server, Spark history server isn't rewriting container log
URL's to point to the aggregated yarn.log.server.url location and relies on the NodeManager
webUI to trigger a redirect. This fails when the NM is down. Note that NM may be down permanently
after decommissioning in traditional environments or when used in a cloud environment such
as AWS EMR where either worker nodes are taken away with autoscale, the whole cluster is used
to run a single job.



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