LuciferYang opened a new pull request #33991:
URL: https://github.com/apache/spark/pull/33991
### What changes were proposed in this pull request?
Java 8 provides the java.util.Objects, this pr it to replace some Guava API
usages with the same semantics, the replacement rules are as follows:
1. Preconditions.checkNotNull -> Objects.requireNonNull
**Guava**
```
public static <T> T checkNotNull(T reference,
@Nullable String errorMessageTemplate,
@Nullable Object... errorMessageArgs) {
if (reference == null) {
// If either of these parameters is null, the right thing happens
anyway
throw new NullPointerException(
format(errorMessageTemplate, errorMessageArgs));
}
return reference;
}
```
**java.util.Objects**
```
public static <T> T requireNonNull(T obj, Supplier<String>
messageSupplier) {
if (obj == null)
throw new NullPointerException(messageSupplier.get());
return obj;
}
```
2. Objects.hashCode -> j.u.Objects.hash
**Guava**
```
public static int hashCode(@Nullable Object... objects) {
return java.util.Arrays.hashCode(objects);
}
```
**java.util.Objects**
```
public static int hash(Object... values) {
return java.util.Arrays.hashCode(values);
}
```
3. Objects.equal -> j.u.Objects.equals
**Guava**
```
public static boolean equal(@Nullable Object a, @Nullable Object b) {
return a == b || (a != null && a.equals(b));
}
```
**java.util.Objects**
```
public static boolean equals(Object a, Object b) {
return (a == b) || (a != null && a.equals(b));
}
```
### Why are the changes needed?
Reduce dependence on Guava API because Spark still use Guava 14.0.1.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Pass the Jenkins or GitHub Action
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