Github user jinxing64 commented on the issue:
https://github.com/apache/spark/pull/16503
>If we can remove uses of askWithRetry as we find these issues, we can, at
some point, finally get rid of the API altogether.
How do you think about providing a *"blocking"* `ask` in `RpcEndpointRef`?
Just wait the future but no retry. Thus no need to wait the future outside of
`RpcEndpontRef`. If you agree, I'll make another PR for changing. Currently I
already found some places using a blocking `ask`, that's why I think it's
needed to provid one in `RpcEndpointRef`.
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