我是新的风暴,但我仍然在我的本地机器上配置风暴。我创建了一个eclipse项目,并遵循了一个来自internet的简单示例。现在我的拓扑正在提交,但它不工作。
拓扑是否已提交?是的,它被提交成功,因为我可以看到它在风暴用户界面。
我的拓扑学工作就是打印一个素数。但不是打印出来的。
我提供的代码如下:
喷口等级:
public class NumberSpout extends BaseRichSpout
{
private SpoutOutputCollector collector;
private static final Logger LOGGER = Logger.getLogger(SpoutOutputCollector.class);
private static int currentNumber = 1;
@Override
public void open( Map conf, TopologyContext context, SpoutOutputCollector collector )
{
this.collector = collector;
}
@Override
public void nextTuple()
{
// Emit the next number
LOGGER.info("Coming in spout tuble method");
collector.emit( new Values( new Integer( currentNumber++ ) ) );
}
@Override
public void ack(Object id)
{
}
@Override
public void fail(Object id)
{
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer)
{
declarer.declare( new Fields( "number" ) );
}
}
螺栓等级:
public class PrimeNumberBolt extends BaseRichBolt
{ private static final Logger LOGGER = Logger.getLogger(PrimeNumberBolt.class);
private OutputCollector collector;
public void prepare( Map conf, TopologyContext context, OutputCollector collector )
{
this.collector = collector;
}
public void execute( Tuple tuple )
{
int number = tuple.getInteger( 0 );
if( isPrime( number) )
{
LOGGER.info("Prime number printed is: )" +number);
System.out.println( number );
}
collector.ack( tuple );
}
public void declareOutputFields( OutputFieldsDeclarer declarer )
{
declarer.declare( new Fields( "number" ) );
}
private boolean isPrime( int n )
{
if( n == 1 || n == 2 || n == 3 )
{
return true;
}
// Is n an even number?
if( n % 2 == 0 )
{
return false;
}
//if not, then just check the odds
for( int i=3; i*i<=n; i+=2 )
{
if( n % i == 0)
{
return false;
}
}
return true;
}
}
拓扑类:
public class PrimeNumberTopology
{
public static void main(String[] args)
{
TopologyBuilder builder = new TopologyBuilder();
builder.setSpout( "spout", new NumberSpout(),1 );
builder.setBolt( "prime", new PrimeNumberBolt(),1 )
.shuffleGrouping("spout");
Config conf = new Config();
conf.put(Config.NIMBUS_HOST, "127.0.0.1");
conf.setDebug(true);
Map storm_conf = Utils.readStormConfig();
storm_conf.put("nimbus.host", "127.0.0.1");
Client client = NimbusClient.getConfiguredClient(storm_conf)
.getClient();
String inputJar = "/home/jamil/Downloads/storm-twitter-word-count-master/target/storm-test-1.0-SNAPSHOT.jar";
NimbusClient nimbus = new NimbusClient("127.0.0.1",6627);
// upload topology jar to Cluster using StormSubmitter
String uploadedJarLocation = StormSubmitter.submitJar(storm_conf,
inputJar);
try {
String jsonConf = JSONValue.toJSONString(storm_conf);
nimbus.getClient().submitTopology("newtesttopology",
uploadedJarLocation, jsonConf, builder.createTopology());
} catch (AlreadyAliveException ae) {
ae.printStackTrace();
} catch (InvalidTopologyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
现在我想问为什么不打印?或者为什么不写日志文件?
另外:我正在提交来自eclipse的拓扑。
1条答案
按热度按时间bd1hkmkf1#
除了什么
@Thomas Jungblut
说(关于log4j配置),并假设这是拓扑的完整源代码,然后看看您的nextTuple()
你的嘴的方法。你的嘴只不过是在释放一个值而已。很有可能您在控制台中丢失了该发射的输出,因为它埋在大量其他日志输出之下。
是否确定只发射一个值?