tedyu opened a new pull request, #39580:
URL: https://github.com/apache/spark/pull/39580
### What changes were proposed in this pull request?
This PR adds check of spark.shuffle.sasl.enableRetries config before
throwing SaslTimeoutException.
### Why are the changes needed?
`spark.shuffle.sasl.enableRetries` has default value of false.
In `shouldRetry` of `RetryingBlockTransferor`:
```
boolean isSaslTimeout = enableSaslRetries && e instanceof
SaslTimeoutException;
```
Meaning, when `enableSaslRetries` is false, `isSaslTimeout` would be false
as well.
Hence we don't need to throw `SaslTimeoutException` if `enableSaslRetries`
is false.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Existing test suite.
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