java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient

Question

I have Hadoop 2.7.1 and apache-hive-1.2.1 versions installed on ubuntu 14.0.

1. Why this error is occurring ?
2. Is any metastore installation required?

Answer 1

I did below modifications and I am able to start the Hive Shell without any errors:

1. ~/.bashrc

Inside bashrc file add the below environment variables at End Of File : sudo gedit ~/.bashrc

#Java Home directory configuration
export JAVA_HOME="/usr/lib/jvm/java-9-oracle"
export PATH="$PATH:$JAVA_HOME/bin"

# Hadoop home directory configuration
export HADOOP_HOME=/usr/local/hadoop
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin

export HIVE_HOME=/usr/lib/hive
export PATH=$PATH:$HIVE_HOME/bin

2. hive-site.xml

You have to create this file(hive-site.xml) in conf directory of Hive and add the below details

  javax.jdo.option.ConnectionURL
  jdbc:mysql://localhost/metastore?createDatabaseIfNotExist=true




  javax.jdo.option.ConnectionDriverName
  com.mysql.jdbc.Driver



  javax.jdo.option.ConnectionUserName
  root



  javax.jdo.option.ConnectionPassword
  root



  datanucleus.autoCreateSchema
  true



  datanucleus.fixedDatastore
  true



 datanucleus.autoCreateTables
 True
 

3. You also need to put the jar file(mysql-connector-java-5.1.28.jar) in the lib directory of Hive

4. Below installations required on your Ubuntu to Start the Hive Shell:

1. MySql
2. Hadoop
3. Hive
4. Java

5. Execution Part:

1. Start all services of Hadoop: start-all.sh

2. Enter the jps command to check whether all Hadoop services are up and running: jps

3. Enter the hive command to enter into hive shell: hive