Configuring Whether Spark Obtains HBase Tokens

Scenario

When Spark is used to submit tasks, the driver obtains tokens from HBase by default. To access HBase, you need to configure the jaas.conf file for security authentication. If the jaas.conf file is not configured, the application will fail to run.

Therefore, perform the following operations based on whether the application involves HBase:

• If the application does not involve HBase, you do not need to obtain the HBase tokens. In this case, set spark.yarn.security.credentials.hbase.enabled to false.
• If the application involves HBase, set spark.yarn.security.credentials.hbase.enabled to true and configure the jaas.conf file on the driver as follows:

  {client}/spark/bin/spark-sql  --master yarn-client --principal {principal} --keytab {keytab} --driver-java-options "-Djava.security.auth.login.config={LocalPath}/jaas.conf"

  Specify Keytab and Principal in the jaas.conf file. The following is an example:

  Client {
  com.sun.security.auth.module.Krb5LoginModule required
  useKeyTab=true
  keyTab = "{LocalPath}/user.keytab"
  principal="super@<System domain name>"
  useTicketCache=false
  debug=false;
  };

Configuration

Configure the following parameter in the spark-defaults.conf file of the Spark client.