Sergey Shelukhin commented on TEZ-3815:

cc [~sseth]

> allow plugins to be aware of each other
> ---------------------------------------
>                 Key: TEZ-3815
>                 URL: https://issues.apache.org/jira/browse/TEZ-3815
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
> Given that many sets of plugins (e.g. LLAP) come as a package deal and do not 
> work without each other, it would make sense for them to be aware of each 
> other. 
> Not sure yet of the best way for this to work, we probably don't want too 
> much complexity, dependency systems, etc. Perhaps after all the plugins are 
> initialized fully, an optional-to-implement call could be made to each of 
> them passing a map from plugin type (communicator, scheduler, etc.) to the 
> instance that is going to be used for this DAG.

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