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https://issues.apache.org/jira/browse/TEZ-325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Eagles resolved TEZ-325.
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Resolution: Won't Fix
This is a good idea, but I think it has stagnated. Closing this old jira.
> Allow work units to be assigned to running tasks
> ------------------------------------------------
>
> Key: TEZ-325
> URL: https://issues.apache.org/jira/browse/TEZ-325
> Project: Apache Tez
> Issue Type: New Feature
> Reporter: Siddharth Seth
> Priority: Major
>
> An extension of container reuse. Instead of re-initializing new data
> structures for each task run by a container - this is to allow a work unit to
> be given to the task so that it can make use of existing structures.
> As an example - reusing sort buffers when running map tasks, Hive may need to
> generate some vertex level information - which is the same across all tasks
> in a vertex.
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