[jira] [Reopened] (SPARK-15815) Hang while enable blacklistExecutor and DynamicExecutorAllocator

["Imran Rashid (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-15815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Imran Rashid reopened SPARK-15815:
----------------------------------

[~sowen] I think "won't fix" is the wrong resolution here.  This is a real bug that should be fixed (even if the currently proposed solution is not the right one).  So I'm re-opening.

> Hang while enable blacklistExecutor and DynamicExecutorAllocator 
> -----------------------------------------------------------------
>
>                 Key: SPARK-15815
>                 URL: https://issues.apache.org/jira/browse/SPARK-15815
>             Project: Spark
>          Issue Type: Bug
>          Components: Scheduler, Spark Core
>    Affects Versions: 1.6.1
>            Reporter: SuYan
>            Priority: Minor
>
> Enable BlacklistExecutor with some time large than 120s and enabled DynamicAllocate with minExecutors = 0
> 1. Assume there only left 1 task running in Executor A, and other Executor are all timeout.  
> 2. the task failed, so task will not scheduled in current Executor A due to enable blacklistTime.
> 3. For ExecutorAllocateManager, it always request targetNumExecutor=1 executors, due to we already have executor A, so the oldTargetNumExecutor  == targetNumExecutor = 1, so will never add more Executors...even if Executor A was timeout.  it became endless request delta=0 executors.



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