本博文的主要内容有
.storm单机模式，打包，放到storm集群
.Storm的并发机制图
.Storm的相关概念
.附PPT
打包，放到storm集群去。我这里，是单机模式下的storm。
weekend110-storm -> Export -> JAR file ->
当然，这边，肯定是，准备工作已经做好了。如启动了zookeeper，storm集群。
上传导出的jar
sftp> cd /home/hadoop/
sftp> put c:/d
demotop.jar Documents and Settings/
sftp> put c:/demotop.jar
Uploading demotop.jar to /home/hadoop/demotop.jar
100% 8KB 8KB/s 00:00:00
c:/demotop.jar: 9199 bytes transferred in 0 seconds (8 KB/s)
sftp>
新建输出目录
/home/hadoop/stormoutput/
[hadoop@weekend110 ~]$ cd /home/hadoop/app/apache-storm-0.9.2-incubating/
[hadoop@weekend110 apache-storm-0.9.2-incubating]$ cd bin
[hadoop@weekend110 bin]$ ls
storm storm.cmd storm-config.cmd
[hadoop@weekend110 bin]$ mkdir -p /home/hadoop/stormoutput/
[hadoop@weekend110 bin]$ ./storm jar ~/demotop.jar cn.itcast.stormdemo.TopoMain
[hadoop@weekend110 bin]$ ./storm jar ~/demotop.jar cn.itcast.stormdemo.TopoMain
Running: /home/hadoop/app/jdk1.7.0_65/bin/java -client -Dstorm.options= -Dstorm.home=/home/hadoop/app/apache-storm-0.9.2-incubating -Djava.library.path=/usr/local/lib:/opt/local/lib:/usr/lib -Dstorm.conf.file= -cp /home/hadoop/app/apache-storm-0.9.2-incubating/lib/hiccup-0.3.6.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/log4j-over-slf4j-1.6.6.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/chill-java-0.3.5.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/httpcore-4.3.2.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/zookeeper-3.4.5.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/ring-core-1.1.5.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/clj-time-0.4.1.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/storm-core-0.9.2-incubating.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/httpclient-4.3.3.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/curator-framework-2.4.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/minlog-1.2.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/commons-codec-1.6.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/core.incubator-0.1.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/tools.macro-0.1.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/ring-servlet-0.3.11.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/netty-3.6.3.Final.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/commons-lang-2.5.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/logback-core-1.0.6.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/jgrapht-core-0.9.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/slf4j-api-1.6.5.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/kryo-2.21.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/clout-1.0.1.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/objenesis-1.2.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/tools.cli-0.2.4.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/jetty-6.1.26.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/joda-time-2.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/servlet-api-2.5-20081211.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/carbonite-1.4.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/curator-client-2.4.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/ring-jetty-adapter-0.3.11.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/commons-exec-1.1.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/reflectasm-1.07-shaded.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/commons-logging-1.1.3.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/clojure-1.5.1.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/guava-13.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/disruptor-2.10.1.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/compojure-1.1.3.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/netty-3.2.2.Final.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/servlet-api-2.5.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/clj-stacktrace-0.2.4.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/commons-io-2.4.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/logback-classic-1.0.6.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/ring-devel-0.3.11.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/snakeyaml-1.11.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/jline-2.11.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/tools.logging-0.2.3.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/asm-4.0.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/json-simple-1.1.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/jetty-util-6.1.26.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/math.numeric-tower-0.0.1.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/lib/commons-fileupload-1.2.1.jar:/home/hadoop/demotop.jar:/home/hadoop/app/apache-storm-0.9.2-incubating/conf:/home/hadoop/app/apache-storm-0.9.2-incubating/bin -Dstorm.jar=/home/hadoop/demotop.jar cn.itcast.stormdemo.TopoMain
2495 [main] INFO backtype.storm.StormSubmitter - Jar not uploaded to master yet. Submitting jar...
2566 [main] INFO backtype.storm.StormSubmitter - Uploading topology jar /home/hadoop/demotop.jar to assigned location: /home/hadoop/data/apache-storm-0.9.2-incubating/tmp/storm/nimbus/inbox/stormjar-67666aeb-2578-43c5-a328-e91d30b25a36.jar
2664 [main] INFO backtype.storm.StormSubmitter - Successfully uploaded topology jar to assigned location: /home/hadoop/data/apache-storm-0.9.2-incubating/tmp/storm/nimbus/inbox/stormjar-67666aeb-2578-43c5-a328-e91d30b25a36.jar
2665 [main] INFO backtype.storm.StormSubmitter - Submitting topology demotopo in distributed mode with conf {"topology.workers":4,"topology.acker.executors":0,"topology.debug":true}
4171 [main] INFO backtype.storm.StormSubmitter - Finished submitting topology: demotopo
[hadoop@weekend110 bin]$
Storm UI
Cluster Summary
|
Version |
Nimbus uptime |
Supervisors |
Used slots |
Free slots |
Total slots |
Executors |
Tasks |
|
0.9.2-incubating |
5h 4m 2s |
1 |
4 |
0 |
4 |
12 |
16 |
Topology summary
|
Name |
Id |
Status |
Uptime |
Num workers |
Num executors |
Num tasks |
|
demotopo-1-1476517821 |
ACTIVE |
55s |
16 |
4 |
12 |
Supervisor summary
|
Id |
Host |
Uptime |
Slots |
Used slots |
|
3a41e7dd-0160-4ad0-bad5-096cdba4647e |
weekend110 |
5h 2m 51s |
4 |
4 |
Nimbus Configuration
|
Key |
Value |
|
dev.zookeeper.path |
/tmp/dev-storm-zookeeper |
|
topology.tick.tuple.freq.secs |
|
|
topology.builtin.metrics.bucket.size.secs |
60 |
|
topology.fall.back.on.java.serialization |
true |
|
topology.max.error.report.per.interval |
5 |
|
zmq.linger.millis |
5000 |
|
topology.skip.missing.kryo.registrations |
false |
|
storm.messaging.netty.client_worker_threads |
1 |
|
ui.childopts |
-Xmx768m |
|
storm.zookeeper.session.timeout |
20000 |
|
nimbus.reassign |
true |
|
topology.trident.batch.emit.interval.millis |
500 |
|
storm.messaging.netty.flush.check.interval.ms |
10 |
|
nimbus.monitor.freq.secs |
10 |
|
logviewer.childopts |
-Xmx128m |
|
java.library.path |
/usr/local/lib:/opt/local/lib:/usr/lib |
|
topology.executor.send.buffer.size |
1024 |
|
storm.local.dir |
/home/hadoop/data/apache-storm-0.9.2-incubating/tmp/storm |
|
storm.messaging.netty.buffer_size |
5242880 |
|
supervisor.worker.start.timeout.secs |
120 |
|
topology.enable.message.timeouts |
true |
|
nimbus.cleanup.inbox.freq.secs |
600 |
|
nimbus.inbox.jar.expiration.secs |
3600 |
|
drpc.worker.threads |
64 |
|
topology.worker.shared.thread.pool.size |
4 |
|
nimbus.host |
weekend110 |
|
storm.messaging.netty.min_wait_ms |
100 |
|
storm.zookeeper.port |
2181 |
|
transactional.zookeeper.port |
|
|
topology.executor.receive.buffer.size |
1024 |
|
transactional.zookeeper.servers |
|
|
storm.zookeeper.root |
/storm |
|
storm.zookeeper.retry.intervalceiling.millis |
30000 |
|
supervisor.enable |
true |
|
storm.messaging.netty.server_worker_threads |
1 |
|
storm.zookeeper.servers |
weekend110 |
|
transactional.zookeeper.root |
/transactional |
|
topology.acker.executors |
|
|
topology.transfer.buffer.size |
1024 |
|
topology.worker.childopts |
|
|
drpc.queue.size |
128 |
|
worker.childopts |
-Xmx768m |
|
supervisor.heartbeat.frequency.secs |
5 |
|
topology.error.throttle.interval.secs |
10 |
|
zmq.hwm |
0 |
|
drpc.port |
3772 |
|
supervisor.monitor.frequency.secs |
3 |
|
drpc.childopts |
-Xmx768m |
|
topology.receiver.buffer.size |
8 |
|
task.heartbeat.frequency.secs |
3 |
|
topology.tasks |
|
|
storm.messaging.netty.max_retries |
30 |
|
topology.spout.wait.strategy |
backtype.storm.spout.SleepSpoutWaitStrategy |
|
nimbus.thrift.max_buffer_size |
1048576 |
|
topology.max.spout.pending |
|
|
storm.zookeeper.retry.interval |
1000 |
|
topology.sleep.spout.wait.strategy.time.ms |
1 |
|
nimbus.topology.validator |
backtype.storm.nimbus.DefaultTopologyValidator |
|
supervisor.slots.ports |
6700,6701,6702,6703 |
|
topology.debug |
false |
|
nimbus.task.launch.secs |
120 |
|
nimbus.supervisor.timeout.secs |
60 |
|
topology.message.timeout.secs |
30 |
|
task.refresh.poll.secs |
10 |
|
topology.workers |
1 |
|
supervisor.childopts |
-Xmx256m |
|
nimbus.thrift.port |
6627 |
|
topology.stats.sample.rate |
0.05 |
|
worker.heartbeat.frequency.secs |
1 |
|
topology.tuple.serializer |
backtype.storm.serialization.types.ListDelegateSerializer |
|
topology.disruptor.wait.strategy |
com.lmax.disruptor.BlockingWaitStrategy |
|
topology.multilang.serializer |
backtype.storm.multilang.JsonSerializer |
|
nimbus.task.timeout.secs |
30 |
|
storm.zookeeper.connection.timeout |
15000 |
|
topology.kryo.factory |
backtype.storm.serialization.DefaultKryoFactory |
|
drpc.invocations.port |
3773 |
|
logviewer.port |
8000 |
|
zmq.threads |
1 |
|
storm.zookeeper.retry.times |
5 |
|
topology.worker.receiver.thread.count |
1 |
|
storm.thrift.transport |
backtype.storm.security.auth.SimpleTransportPlugin |
|
topology.state.synchronization.timeout.secs |
60 |
|
supervisor.worker.timeout.secs |
30 |
|
nimbus.file.copy.expiration.secs |
600 |
|
storm.messaging.transport |
backtype.storm.messaging.netty.Context |
|
logviewer.appender.name |
A1 |
|
storm.messaging.netty.max_wait_ms |
1000 |
|
drpc.request.timeout.secs |
600 |
|
storm.local.mode.zmq |
false |
|
ui.port |
8080 |
|
nimbus.childopts |
-Xmx1024m |
|
storm.cluster.mode |
distributed |
|
topology.max.task.parallelism |
|
|
storm.messaging.netty.transfer.batch.size |
262144 |
[hadoop@weekend110 apache-storm-0.9.2-incubating]$ jps
4065 worker
2116 QuorumPeerMain
4067 worker
4236 Jps
3220 supervisor
3160 nimbus
4059 worker
3210 core
4061 worker
[hadoop@weekend110 apache-storm-0.9.2-incubating]$
若是3节点的，分布式storm集群，则
[hadoop@weekend110 apache-storm-0.9.2-incubating]$ jps
4065 worker
2116 QuorumPeerMain
4067 worker
4236 Jps
3220 supervisor
3160 nimbus
4059 worker
3210 core
4061 worker
[hadoop@weekend110 apache-storm-0.9.2-incubating]$ cd /home/hadoop/stormoutput/
[hadoop@weekend110 stormoutput]$ ll
total 32
-rw-rw-r--. 1 hadoop hadoop 7741 Oct 15 15:57 148996a9-4c34-498b-8199-5c887cd4a7f0
-rw-rw-r--. 1 hadoop hadoop 7683 Oct 15 15:57 4a71fb82-1562-45dd-886c-b5610a202fd0
-rw-rw-r--. 1 hadoop hadoop 7681 Oct 15 15:57 71b93a13-4b79-460f-a1c9-b454d24e925d
-rw-rw-r--. 1 hadoop hadoop 7744 Oct 15 15:57 b20451ec-9bdd-4f92-a295-814a69b1a6e8
[hadoop@weekend110 stormoutput]$
得到的4个输出文件。
[hadoop@weekend110 apache-storm-0.9.2-incubating]$ cd /home/hadoop/stormoutput/
[hadoop@weekend110 stormoutput]$ ll
total 32
-rw-rw-r--. 1 hadoop hadoop 7741 Oct 15 15:57 148996a9-4c34-498b-8199-5c887cd4a7f0
-rw-rw-r--. 1 hadoop hadoop 7683 Oct 15 15:57 4a71fb82-1562-45dd-886c-b5610a202fd0
-rw-rw-r--. 1 hadoop hadoop 7681 Oct 15 15:57 71b93a13-4b79-460f-a1c9-b454d24e925d
-rw-rw-r--. 1 hadoop hadoop 7744 Oct 15 15:57 b20451ec-9bdd-4f92-a295-814a69b1a6e8
[hadoop@weekend110 stormoutput]$ tail -f 148996a9-4c34-498b-8199-5c887cd4a7f0
XIAOMI_itisok
MOTO_itisok
MOTO_itisok
MOTO_itisok
MOTO_itisok
MATE_itisok
MEIZU_itisok
XIAOMI_itisok
SONY_itisok
MATE_itisok
MEIZU_itisok
IPHONE_itisok
MEIZU_itisok
XIAOMI_itisok
MATE_itisok
MOTO_itisok
MOTO_itisok
SONY_itisok
MEIZU_itisok
MOTO_itisok
MATE_itisok
MEIZU_itisok
MATE_itisok
SUMSUNG_itisok
MATE_itisok
MATE_itisok
MEIZU_itisok
SONY_itisok
MEIZU_itisok
MATE_itisok
MOTO_itisok
SONY_itisok
XIAOMI_itisok
SONY_itisok
MOTO_itisok
MATE_itisok
IPHONE_itisok
SONY_itisok
XIAOMI_itisok
SUMSUNG_itisok
SUMSUNG_itisok
SONY_itisok
MEIZU_itisok
IPHONE_itisok
MATE_itisok
MATE_itisok
MOTO_itisok
XIAOMI_itisok
SUMSUNG_itisok
MATE_itisok
MOTO_itisok
MATE_itisok
SUMSUNG_itisok
SONY_itisok
XIAOMI_itisok
IPHONE_itisok
SUMSUNG_itisok
MEIZU_itisok
MOTO_itisok
SUMSUNG_itisok
MOTO_itisok
MATE_itisok
XIAOMI_itisok
MOTO_itisok
IPHONE_itisok
MATE_itisok
SONY_itisok
XIAOMI_itisok
IPHONE_itisok
IPHONE_itisok
XIAOMI_itisok
SONY_itisok
MATE_itisok
MOTO_itisok
SUMSUNG_itisok
SONY_itisok
MATE_itisok
XIAOMI_itisok
SONY_itisok
XIAOMI_itisok
[hadoop@weekend110 apache-storm-0.9.2-incubating]$ cd bin/
[hadoop@weekend110 bin]$ clear
[hadoop@weekend110 bin]$ cd /home/hadoop/stormoutput/
[hadoop@weekend110 stormoutput]$ clear
[hadoop@weekend110 stormoutput]$ pwd
/home/hadoop/stormoutput
[hadoop@weekend110 stormoutput]$ ll
total 64
-rw-rw-r--. 1 hadoop hadoop 12868 Oct 15 16:00 148996a9-4c34-498b-8199-5c887cd4a7f0
-rw-rw-r--. 1 hadoop hadoop 12885 Oct 15 16:00 4a71fb82-1562-45dd-886c-b5610a202fd0
-rw-rw-r--. 1 hadoop hadoop 12863 Oct 15 16:00 71b93a13-4b79-460f-a1c9-b454d24e925d
-rw-rw-r--. 1 hadoop hadoop 12903 Oct 15 16:00 b20451ec-9bdd-4f92-a295-814a69b1a6e8
[hadoop@weekend110 stormoutput]$ tail -f 4a71fb82-1562-45dd-886c-b5610a202fd0
MEIZU_itisok
SONY_itisok
MOTO_itisok
MOTO_itisok
MOTO_itisok
SONY_itisok
MEIZU_itisok
SUMSUNG_itisok
XIAOMI_itisok
XIAOMI_itisok
MEIZU_itisok
SONY_itisok
SUMSUNG_itisok
XIAOMI_itisok
SONY_itisok
MEIZU_itisok
SUMSUNG_itisok
MEIZU_itisok
SUMSUNG_itisok
IPHONE_itisok
SUMSUNG_itisok
SONY_itisok
MOTO_itisok
XIAOMI_itisok
SONY_itisok
MOTO_itisok
SONY_itisok
MOTO_itisok
MATE_itisok
MOTO_itisok
MATE_itisok
MEIZU_itisok
MATE_itisok
SONY_itisok
SUMSUNG_itisok
MATE_itisok
XIAOMI_itisok
SUMSUNG_itisok
SUMSUNG_itisok
SUMSUNG_itisok
MATE_itisok
SONY_itisok
MEIZU_itisok
[hadoop@weekend110 stormoutput]$ pwd
/home/hadoop/stormoutput
[hadoop@weekend110 stormoutput]$ ll
total 64
-rw-rw-r--. 1 hadoop hadoop 14265 Oct 15 16:01 148996a9-4c34-498b-8199-5c887cd4a7f0
-rw-rw-r--. 1 hadoop hadoop 14282 Oct 15 16:01 4a71fb82-1562-45dd-886c-b5610a202fd0
-rw-rw-r--. 1 hadoop hadoop 14263 Oct 15 16:01 71b93a13-4b79-460f-a1c9-b454d24e925d
-rw-rw-r--. 1 hadoop hadoop 14334 Oct 15 16:01 b20451ec-9bdd-4f92-a295-814a69b1a6e8
[hadoop@weekend110 stormoutput]$ tail -f 71b93a13-4b79-460f-a1c9-b454d24e925d
MEIZU_itisok
SUMSUNG_itisok
SUMSUNG_itisok
SUMSUNG_itisok
MOTO_itisok
SUMSUNG_itisok
MOTO_itisok
SONY_itisok
SUMSUNG_itisok
IPHONE_itisok
MOTO_itisok
SUMSUNG_itisok
MATE_itisok
MATE_itisok
MOTO_itisok
MOTO_itisok
IPHONE_itisok
XIAOMI_itisok
XIAOMI_itisok
SUMSUNG_itisok
XIAOMI_itisok
MOTO_itisok
SONY_itisok
SUMSUNG_itisok
IPHONE_itisok
IPHONE_itisok
MEIZU_itisok
SONY_itisok
MOTO_itisok
SUMSUNG_itisok
IPHONE_itisok
XIAOMI_itisok
MEIZU_itisok
MOTO_itisok
MEIZU_itisok
XIAOMI_itisok
IPHONE_itisok
SONY_itisok
MATE_itisok
[hadoop@weekend110 stormoutput]$ pwd
/home/hadoop/stormoutput
[hadoop@weekend110 stormoutput]$ ll
total 64
-rw-rw-r--. 1 hadoop hadoop 15994 Oct 15 16:02 148996a9-4c34-498b-8199-5c887cd4a7f0
-rw-rw-r--. 1 hadoop hadoop 15985 Oct 15 16:02 4a71fb82-1562-45dd-886c-b5610a202fd0
-rw-rw-r--. 1 hadoop hadoop 15989 Oct 15 16:02 71b93a13-4b79-460f-a1c9-b454d24e925d
-rw-rw-r--. 1 hadoop hadoop 16051 Oct 15 16:02 b20451ec-9bdd-4f92-a295-814a69b1a6e8
[hadoop@weekend110 stormoutput]$ tail -f b20451ec-9bdd-4f92-a295-814a69b1a6e8
XIAOMI_itisok
XIAOMI_itisok
MEIZU_itisok
SUMSUNG_itisok
XIAOMI_itisok
MOTO_itisok
MATE_itisok
SUMSUNG_itisok
SUMSUNG_itisok
MATE_itisok
IPHONE_itisok
XIAOMI_itisok
MEIZU_itisok
IPHONE_itisok
SUMSUNG_itisok
XIAOMI_itisok
SUMSUNG_itisok
MEIZU_itisok
SONY_itisok
MEIZU_itisok
MOTO_itisok
SONY_itisok
MOTO_itisok
MOTO_itisok
MOTO_itisok
MEIZU_itisok
MOTO_itisok
XIAOMI_itisok
SUMSUNG_itisok
MATE_itisok
MOTO_itisok
MATE_itisok
XIAOMI_itisok
MEIZU_itisok
SONY_itisok
MOTO_itisok
MOTO_itisok
SUMSUNG_itisok
SONY_itisok
XIAOMI_itisok
XIAOMI_itisok
SUMSUNG_itisok
MOTO_itisok
SUMSUNG_itisok
MOTO_itisok
由此可见，是随机分数据的。
Storm的并发机制图，如下
Storm的相关概念
storm的深入学习：
分布式共享锁的实现
事务topology的实现机制及开发模式
在具体场景中的跟其他框架的整合（ 入口： flume/activeMQ/kafka(分布式的消息队列系统) 出口： redis/hbase/mysql cluster）
注意，storm往往不是独立的，在实际业务里，数据来，数据走，
入口： 如：flume/activeMQ/kafka等分布式的消息队列系统。
当前，storm + kafka，是黄金组合。
出口：如edis/hbase/mysql cluster
附PPT：
conf.setNumWorkers(4) 表示设置了4个worker来执行整个topology的所有组件
builder.setBolt("boltA",new BoltA(), 4) ---->指明 boltA组件的线程数excutors总共有4个
builder.setBolt("boltB",new BoltB(), 4) ---->指明 boltB组件的线程数excutors总共有4个
builder.setSpout("randomSpout",new RandomSpout(), 2) ---->指明randomSpout组件的线程数excutors总共有4个
-----意味着整个topology中执行所有组件的总线程数为4+4+2=10个
----worker数量是4个，有可能会出现这样的负载情况， worker-1有2个线程，worker-2有2个线程，worker-3有3个线程，worker-4有3个线程
如果指定某个组件的具体task并发实例数
builder.setSpout("randomspout", new RandomWordSpout(), 4).setNumTasks(8);
----意味着对于这个组件的执行线程excutor来说，一个excutor将执行8/4=2个task
