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https://issues.apache.org/jira/browse/TEZ-2710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14682505#comment-14682505
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Hitesh Shah commented on TEZ-2710:
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There are probably other cases where we need to have the I/O/Ps augment their
configs with global configs provided by Tez ( this could be provided by
TezContext* ). This "global" config could be a union of the tez-conf localized
as part of the container and vertex level config settings ( which could be
propagated down as part of the task spec ).
> TEZ_TASK_SCALE_MEMORY_RESERVE_FRACTION should be configurable at vertex level
> -----------------------------------------------------------------------------
>
> Key: TEZ-2710
> URL: https://issues.apache.org/jira/browse/TEZ-2710
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Rohini Palaniswamy
>
> Was trying to set TezConfiguration.TEZ_TASK_SCALE_MEMORY_RESERVE_FRACTION
> used by WeightedScalingMemoryDistributor at vertex level. But it failed with
> "tez.task.scale.memory.reserve-fraction is set at the scope of VERTEX, but it
> is only valid in the scope of AM"
> Even otherwise [~sseth] was telling me that vertex.setConf() does not work
> as it is supposed to and not taken into account with container reuse.
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