heyihong commented on code in PR #42363:
URL: https://github.com/apache/spark/pull/42363#discussion_r1286134566
##########
sql/api/src/main/java/org/apache/spark/sql/connector/catalog/IdentifierImpl.java:
##########
@@ -17,14 +17,14 @@
package org.apache.spark.sql.connector.catalog;
+import org.apache.arrow.util.Preconditions;
Review Comment:
Yes
```
IdentifierImpl(String[] namespace, String name) {
Preconditions.checkNotNull(namespace, "Identifier namespace cannot be
null");
Preconditions.checkNotNull(name, "Identifier name cannot be null");
this.namespace = namespace;
this.name = name;
}
```
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