yangwwei commented on pull request #140:
URL: 
https://github.com/apache/incubator-yunikorn-k8shim/pull/140#issuecomment-649279353


   Hi @wilfred-s 
   
   Please see the workflow for recovery 
http://yunikorn.apache.org/docs/next/design/resilience.
   
   During recovery, `si.Allocation` will be sent by the shim, the `UUID` will 
be set the same as the podUID. This is because the core doesn't need to really 
schedule this request again, it assumes the pod already scheduled onto a node, 
so it won't generate another `UUID`. 
   
   After recovery, the shim will use the same `UUID` to release the request 
from the core. This is the same `UUID` sent by shim's 
`UpdateRequest->NewNodeInfo->ExistingAllocations->Allocation->UUID`


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