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https://issues.apache.org/jira/browse/TWILL-40?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13897865#comment-13897865
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Fabian Murariu commented on TWILL-40:
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You're right the hosts are only a location hint for the scheduler. They don't
represent any guarantees that the containers will run there, the only thing I'm
interested with the first part of this feature is to extend the client API and
ApplicationMaster to pass an array of hosts into AMRMClient addContainerRequest
with relaxLocality true. So in this case the fallback is the default one.
> Add a way to specify a hostname or hdfs path in WeaveSpecification
> ------------------------------------------------------------------
>
> Key: TWILL-40
> URL: https://issues.apache.org/jira/browse/TWILL-40
> Project: Apache Twill
> Issue Type: New Feature
> Environment: *
> Reporter: Fabian Murariu
> Priority: Minor
>
> I would like to be able to tell YARN through Weave API on what hosts to
> allocate the containers or by specifying the hdfs path and Weave can deduce
> the hosts via InputSplits.
> Please let me know if there is already a way to do this. If there is not
> I would like to add it myself. I could use some pointers just to get around
> quicker.
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