Spark Task Submission Failure

A Spark task fails to be submitted.
Spark displays a message indicating that the Yarn JAR package cannot be obtained.
A file is submitted for multiple times.

Symptom 1:
The most common cause for task submission failure is authentication failure.

The parameter settings may be incorrect.
Symptom 2:
By default, the cluster adds the Hadoop JAR package of the analysis node to the classpath of the task. If the system displays a message indicating that Yarn packages cannot be found, the Hadoop configuration is not set.
Symptom 3:
The common scenario is as follows: The --files option is used to upload the user.keytab file, and then the --keytab option is used to specify the same file. As a result, the same file is uploaded for multiple times.

Symptom 1:
Run kinit [user] again and modify the corresponding configuration items.
Symptom 2:
Check that the Hadoop configuration items are correct and the core-site.xml, hdfs-site.xml, yarn-site.xml, and mapred-site.xml configuration files in the conf directory of Spark are correct.
Symptom 3:
Copy a new user.keytab file, for example:

cp user.keytab user2.keytab

spark-submit --master yarn --files user.keytab --keytab user2.keytab ......