Presto 0.115t Documentation

4.2. Readme for HDP VM Sandbox

4.2. Readme for HDP VM Sandbox

This is a VirtualBox sandbox image that can be used to experiment with the Presto distribution. The credentials for the VM are:

user: presto
password: presto

The image is based on CentOS 6.6 and contains the following components:

  • Presto is installed in /usr/lib/presto. It is set up with Hive, TPCH and JMX connectors. Logs are located in /var/log/presto.
  • presto-admin is installed in /opt/prestoadmin. You can run presto-admin by executing: /opt/prestoadmin/presto-admin.
  • For documentation of the Presto release embedded in the VM see: Presto Documentation.

In addition, the image contains:

  • The Hortonworks Hadoop distribution, version 2.3, running in pseudo distributed mode.
  • Hive (set up to use YARN).
  • Hive Metastore.
  • Zookeeper (used by Hive).
  • MySQL (used by Hive Metastore).

The following sample tables are loaded to HDFS and are visible from Hive:

  • TPC-H nation table.
  • TPC-H region table.

The presto-cli executable JAR can be found in /home/presto and should be used to execute Presto queries. Please wait a few moments after the image boots for the Presto service to start.

Usage example:

[presto@presto-demo-hdp ~]# java -jar /home/presto/presto-cli.jar --catalog hive
show tables;
(2 rows)

presto:default> select * from nation;

JDBC Driver

You can also find the Presto JDBC JAR on the VM (/home/presto/presto-jdbc.jar). It can be used to connect to the Presto server running in the VM from your Java application.

Hadoop Services Startup

After the VM boots, some Hadoop services may still not be started. Starting them takes a couple of minutes depending on the host machine. You can monitor the startup progress of these services through the Ambari UI, which is accessible on port 8081 at http://[guest-ip-address]:8081/. In order to access Ambari from the host machine, you will need to change the network adaptor for the VM from NAT to the Bridged Adaptor. The credentials are admin/admin.