Github user JoshRosen commented on the issue:
https://github.com/apache/spark/pull/15037
Ah, I see the issue: the problem is that we might end up repeatedly
refreshing in case the number of returned locations is is much smaller than the
max fetch attempt count.
I think that we might be able to greatly simplify things by removing a
large portion of this retry / location refresh logic. Let me try to make some
updates to see how feasible that will be.
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