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From Aneela Saleem <ane...@platalytics.com>
Subject submitting spark job with kerberized HBase issue
Date Tue, 09 Aug 2016 12:25:44 GMT
Hi all,

I'm trying to connect to Hbase with security enabled using spark job. I
have kinit'd from command line. When i run the following job i.e.,

/usr/local/spark-2/bin/spark-submit --keytab /etc/hadoop/conf/spark.keytab
--principal spark/hadoop-master@platalyticsrealm --class
com.platalytics.example.spark.App --master yarn  --driver-class-path
/root/hbase-1.2.2/conf /home/vm6/project-1-jar-with-dependencies.jar

I get the error:

2016-08-07 20:43:57,617 WARN
[hconnection-0x24b5fa45-metaLookup-shared--pool2-t1]
ipc.RpcClientImpl: Exception encountered while connecting to the server :
javax.security.sasl.SaslException: GSS initiate failed [Caused by
GSSException: No valid credentials provided (Mechanism level: Failed to
find any Kerberos tgt)] 2016-08-07 20:43:57,619 ERROR
[hconnection-0x24b5fa45-metaLookup-shared--pool2-t1] ipc.RpcClientImpl:
SASL authentication failed. The most likely cause is missing or invalid
credentials. Consider 'kinit'. javax.security.sasl.SaslException: GSS
initiate failed [Caused by GSSException: No valid credentials provided
(Mechanism level: Failed to find any Kerberos tgt)] at
com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:212)
at org.apache.hadoop.hbase.security.HBaseSaslRpcClient.saslConnect(HBaseSaslRpcClient.java:179)
at org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.setupSaslConnection(RpcClientImpl.java:617)
at org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.
access$700(RpcClientImpl.java:162) at org.apache.hadoop.hbase.ipc.
RpcClientImpl$Connection$2.run(RpcClientImpl.java:743)

Following is my code:

System.setProperty("java.security.krb5.conf", "/etc/krb5.conf");
 System.setProperty("java.security.auth.login.config",
"/etc/hbase/conf/zk-jaas.conf");

  val hconf = HBaseConfiguration.create()
  val tableName = "emp"
  hconf.set("hbase.zookeeper.quorum", "hadoop-master")
  hconf.set(TableInputFormat.INPUT_TABLE, tableName)
  hconf.set("hbase.zookeeper.property.clientPort", "2181")
  hconf.set("hadoop.security.authentication", "kerberos")
  hconf.set("hbase.security.authentication", "kerberos")
  hconf.addResource(new Path("/etc/hbase/conf/core-site.xml"))
  hconf.addResource(new Path("/etc/hbase/conf/hbase-site.xml"))
  UserGroupInformation.setConfiguration(hconf)
  val keyTab = "/etc/hadoop/conf/spark.keytab"
  val ugi = UserGroupInformation.loginUserFromKeytabAndReturnUG
I("spark/hadoop-master@platalyticsrealm", keyTab)
  UserGroupInformation.setLoginUser(ugi)
  ugi.doAs(new PrivilegedExceptionAction[Void]() {
   override def run(): Void = {
    val conf = new SparkConf
    val sc = new SparkContext(conf)
    sc.addFile(keyTab)
    var hBaseRDD = sc.newAPIHadoopRDD(hconf, classOf[TableInputFormat],
     classOf[org.apache.hadoop.hbase.io.ImmutableBytesWritable],
     classOf[org.apache.hadoop.hbase.client.Result])
    println("Number of Records found : " + hBaseRDD.count())
    hBaseRDD.foreach(x => {
     println(new String(x._2.getRow()))
    })
    sc.stop()
    return null
   }
  })

Please have a look. And help me try finding the issue.

Thanks

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