Fix allocation of dead head nodes #794
Merged
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What's changing
When storing the Ray data in Redis, the cluster information goes in as well - including the dead head nodes from previous Ray executions. In some situations, e.g. when a job doesn't have node requirements, the scheduler will place it on the node head, but chances are a dead head node is retrieved.
How to test it
This should avoid error messages mentioning that the assigned node for a job is "infeasible".
Additional notes for reviewers
N/A
I already...
/docs
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