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https://issues.apache.org/jira/browse/YARN-4670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15131820#comment-15131820
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Naganarasimha G R commented on YARN-4670:
-----------------------------------------
YARN-3946 informs if the app's AM is stuck and if it misses to schedule on a
node due to its blacklisting for launching AM's for this app.
bq. Regarding logging in SchedulerAppUtils.isBlackListed(), does that get used
for the AM blacklisting too? It's not obvious to me.
*SchedulerAppUtils.isBlackListed* ->
*SchedulerApplicationAttempt.isBlackListed* ->
*AppSchedulingInfo.isBlackListed* and finally in the last call they are
checking for the AM black list so in a way logging is there but as you said its
not too obvious.
??volume of logging?? depends on the number of nodes which are free and and how
many are blacklisted for the application and how long other nodes are occupied.
but IMO it would be rare scenario volume explodes and we can have logging for
it in *AppSchedulingInfo.isBlackListed* , Thoughts ?
> add logging when a node is AM-blacklisted
> -----------------------------------------
>
> Key: YARN-4670
> URL: https://issues.apache.org/jira/browse/YARN-4670
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Affects Versions: 2.8.0
> Reporter: Sangjin Lee
> Assignee: Sangjin Lee
> Priority: Trivial
>
> Today there is not much logging happening when a node is blacklisted for an
> AM (see YARN-2005). We can add a little more logging to see this activity
> easily from the RM logs.
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