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https://issues.apache.org/jira/browse/YARN-7780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16341971#comment-16341971
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Sunil G commented on YARN-7780:
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Thanks [~kkaranasos]
Few comments:
# In distributed shell section, usage of {{-_num_containers_}} may confuse
users when PlacementSpec is also used together. So could you please add a note
that how this relation works to avoid confusion.
# Also in {{example of PlacementSpec}} section, please add a cardinality
example as well.
# I think *TargetTag* is one of critical piece in a PlacementSpec, so I would
like to give a bit more emphasis on that. Something like {{ place 5 containers
with tag "hbase" with affinity to a rack on which containers with tag "zk" are
running (i.e., an "hbase" container should not be placed at a rack where an
"zk" container is running as TargetTag for "hbase" constraint is specified as
"zk")}}
# Do we need to explicitly mention that we are using *SchedulingRequest*
instead of *ResourceRequest* ?
> Documentation for Placement Constraints
> ---------------------------------------
>
> Key: YARN-7780
> URL: https://issues.apache.org/jira/browse/YARN-7780
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Arun Suresh
> Assignee: Konstantinos Karanasos
> Priority: Major
> Attachments: YARN-7780-YARN-6592.001.patch,
> YARN-7780-YARN-6592.002.patch
>
>
> JIRA to track documentation for the feature.
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