Github user budde commented on the issue:
https://github.com/apache/spark/pull/16744
@brkyvz I actually think that Scaladoc may be outdatedâ I double checked
the current master branch and it looks like ```KinesisUtils.createStream()```
will still provide Some(SerializableAWSCredentials(null, null)) when null
values are passed. The [helper method returning the
AWSCredentialsProvider](https://github.com/apache/spark/blob/master/external/kinesis-asl/src/main/scala/org/apache/spark/streaming/kinesis/KinesisReceiver.scala#L312-L324)
passed to the KCL doesn't inspect the values to make sure they are non-null,
so we'd be relying on the AWS SDK implicitly falling back to
```DefaultAWSCredentialsProviderChain()``` when given null credentials, which I
don't believe it does.
Regardless, the check you've suggested would restore this behavior. I'll go
that route.
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