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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2019/07/10 10:32:21 UTC

[GitHub] [flink] zhuzhurk commented on issue #9058: [FLINK-13166] Add support for batch slot requests to SlotPoolImpl

zhuzhurk commented on issue #9058: [FLINK-13166] Add support for batch slot requests to SlotPoolImpl
URL: https://github.com/apache/flink/pull/9058#issuecomment-510007140
 
 
   Hi Xingtong, I think you are right that this improvement cannot handle the case you describes. However, the fine-grained recovery can work as a fallback. It uses re-scheduling as a retry for resources. In this way B will finally get assigned with the resources that is released from A and returned to RM.
   As Stephan mentioned, the failover way can be annoying to Flink users. And Till's PR is targeting for improvement this by reducing task failovers caused by slot allocation timeout. It works for most cases, although not all(like the one you mentioned).
   

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