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Subject [GitHub] [incubator-nemo] alapha23 commented on issue #230: [NEMO-404] Provide user argument to use lambda executor representer
Date Fri, 16 Aug 2019 11:42:06 GMT
alapha23 commented on issue #230: [NEMO-404] Provide user argument to use lambda executor representer
URL: https://github.com/apache/incubator-nemo/pull/230#issuecomment-521981071
 
 
   As you might have realized, there have been quite a lot of changes in the PR compared with
it first raised.
   
   The changes mostly include how we dispatch tasks to LambdaExecutorRepresenter, and how
do we deal with the default executors.
   
   The design change was due to the detriment of previous plan, that we forgot to switch off
containers for default executors --- those containers were still used for messaging and task
state manipulation by TaskStateManager and PlanStateManager.
   
   The new design bypasses the container initialization part, especially [AllocatedEvaluatorHandler](https://github.com/apache/incubator-nemo/blob/master/runtime/driver/src/main/java/org/apache/nemo/driver/NemoDriver.java#L159)
and [ActiveContextHandler](https://github.com/apache/incubator-nemo/blob/master/runtime/driver/src/main/java/org/apache/nemo/driver/NemoDriver.java#L171).

   
   You are encouraged to read the JIRA issue and comment. For details of the new design's
implementation, please refer to  `[NEMO-406] Invoke LambdaExecutor without creating containers`
#231

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