Github user witgo commented on the issue:
https://github.com/apache/spark/pull/17329
```java
public class HadoopConfigProvider extends ConfigProvider {
private final Configuration conf;
public HadoopConfigProvider(Configuration conf) {
this.conf = conf;
}
@Override
public String get(String name) {
String value = conf.get(name);
// When do not set the value of spark.storage.memoryMapThreshold or
spark.shuffle.io.lazyFD,
// When the value of `value` is null
if (value == null) {
throw new NoSuchElementException(name);
}
return value;
}
@Override
public Iterable<Map.Entry<String, String>> getAll() {
return conf;
}
}
````
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