org.apache.storm.starter.streams

Class StateQueryExample

java.lang.Object

org.apache.storm.starter.streams.StateQueryExample

public class StateQueryExample
extends Object

An example that uses Stream.stateQuery(StreamState) to query the state

You should start a local redis instance before running the 'storm jar' command. By default the connection will be attempted at localhost:6379. The default RedisKeyValueStateProvider parameters can be overridden in conf/storm.yaml, for e.g.

 topology.state.provider.config: '{"keyClass":"...", "valueClass":"...",
  "keySerializerClass":"...", "valueSerializerClass":"...",
  "jedisPoolConfig":{"host":"localhost", "port":6379,
  "timeout":2000, "database":0, "password":"xyz"}}'
 

Constructor Summary

Constructors

Constructor and Description
StateQueryExample()

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

StateQueryExample

public StateQueryExample()

Method Detail

main

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

Throws:

Exception