org.apache.tez.examples

Class SimpleSessionExample

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.tez.examples.SimpleSessionExample

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

public class SimpleSessionExample
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

Simple example that shows how Tez session mode can be used to run multiple DAGs in the same session for efficiency and performance. Tez session mode enables the execution environment to hold onto execution resources so that they can be reused to across multiple DAGs. Typical use cases for this would be drill-down queries from a user shell or maintaining a pool of resources to provide low latency execution of DAGs for an application. In this example we will be submitting multiple OrderedWordCount DAGs on different inputs to the same session.

Constructor Summary

Constructors

Constructor and Description
SimpleSessionExample()

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(String[] args)
int	run(String[] args)
boolean	run(String[] inputPaths, String[] outputPaths, org.apache.hadoop.conf.Configuration conf, int numPartitions)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

SimpleSessionExample

public SimpleSessionExample()

Method Detail

run

public boolean run(String[] inputPaths,
          String[] outputPaths,
          org.apache.hadoop.conf.Configuration conf,
          int numPartitions)
            throws Exception

Throws:

Exception

run

public int run(String[] args)
        throws Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

Exception

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception