[ASTERIXDB-3519][EXT]: Fix error message

- user model changes: change error message
- storage format changes: no
- interface changes: no

details:
- Log the exception and show a different error message

Change-Id: I97bdaf6639855158a6982e0015655c0e99795119
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/19063
Reviewed-by: Murtadha Hubail <mhubail@apache.org>
Tested-by: Murtadha Hubail <mhubail@apache.org>
diff --git a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/util/HDFSUtils.java b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/util/HDFSUtils.java
index 6d004d5..2984954 100644
--- a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/util/HDFSUtils.java
+++ b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/util/HDFSUtils.java
@@ -89,10 +89,14 @@
 import org.apache.hyracks.api.exceptions.Warning;
 import org.apache.hyracks.api.network.INetworkSecurityManager;
 import org.apache.hyracks.hdfs.scheduler.Scheduler;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.apache.parquet.hadoop.ParquetInputFormat;
 
 public class HDFSUtils {
 
+    private static final Logger LOGGER = LogManager.getLogger();
+
     private HDFSUtils() {
     }
 
@@ -339,8 +343,8 @@
             Files.writeString(krb5conf,
                     String.format(ExternalDataConstants.KERBEROS_CONFIG_FILE_CONTENT, kerberosRealm, kerberosKdc));
         } catch (IOException ex) {
-            throw AsterixException.create(ErrorCode.COULD_NOT_CREATE_FILE,
-                    String.join("", ExternalDataConstants.KERBEROS_CONFIG_FILE_PATTERN));
+            LOGGER.error("Failed to create kerberos config file", ex);
+            throw AsterixException.create(ErrorCode.COULD_NOT_CREATE_TOKENS);
         }
         return krb5conf;
     }