性能问题：Kafka+Storm+三叉戟+不透明

Question

Broker broker = Broker.fromString("localhost:9092")
    GlobalPartitionInformation info = new GlobalPartitionInformation()
    if(args[4]){
        int partitionCount = args[4].toInteger()
        for(int i =0;i<partitionCount;i++){
            info.addPartition(i, broker)
        }
    }
    StaticHosts hosts = new StaticHosts(info)
    TridentKafkaConfig tridentKafkaConfig = new TridentKafkaConfig(hosts,"test")
    tridentKafkaConfig.scheme = new SchemeAsMultiScheme(new StringScheme())


    OpaqueTridentKafkaSpout kafkaSpout = new OpaqueTridentKafkaSpout(tridentKafkaConfig)
    TridentTopology topology = new TridentTopology()
    Stream st  = topology.newStream("spout1", kafkaSpout).parallelismHint(args[2].toInteger())
            .each(kafkaSpout.getOutputFields(), new NEO4JTridentFunction(), new Fields("status"))
            .parallelismHint(args[1].toInteger())
    Map conf = new HashMap()
    conf.put(Config.TOPOLOGY_WORKERS, args[3].toInteger())
    conf.put(Config.TOPOLOGY_DEBUG, false)

    if (args[0] == "local") {
        LocalCluster cluster = new LocalCluster()
        cluster.submitTopology("mytopology", conf, topology.build())
    } else {
        StormSubmitter.submitTopology("mytopology", conf, topology.build())
        NEO4JTridentFunction.getGraphDatabaseService().shutdown()
    }

########### These MUST be filled in for a storm configuration
storm.zookeeper.servers:
     - "localhost"
#     - "server2"
# 
storm.zookeeper.port : 2999


storm.local.dir: "/opt/mphrx/neo4j/stormdatadir"

nimbus.childopts: "-Xms2048m"
ui.childopts: "-Xms1024m"
logviewer.childopts: "-Xmx512m"
supervisor.childopts: "-Xms1024m"
worker.childopts: "-Xms2600m -Xss256k -XX:MaxPermSize=128m -XX:PermSize=96m
    -XX:NewSize=1000m -XX:MaxNewSize=1000m -XX:MaxTenuringThreshold=1 -XX:SurvivorRatio=6
    -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled
    -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly
    -server -XX:+AggressiveOpts -XX:+UseCompressedOops -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true
    -Xloggc:logs/gc-worker-%ID%.log -verbose:gc
    -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=1m
    -XX:+PrintGCDetails -XX:+PrintHeapAtGC -XX:+PrintGCTimeStamps -XX:+PrintClassHistogram
    -XX:+PrintTenuringDistribution -XX:-PrintGCApplicationStoppedTime -XX:-PrintGCApplicationConcurrentTime
    -XX:+PrintCommandLineFlags -XX:+PrintFlagsFinal"

java.library.path: "/usr/lib/jvm/jdk1.7.0_25"

supervisor.slots.ports:
    - 6700
    - 6701
    - 6702
    - 6703

topology.trident.batch.emit.interval.millis: 100
topology.message.timeout.secs: 300
#topology.max.spout.pending: 10000

谢谢,

Answer 1

您应该为提到的主题设置与分区计数相同的spout并行度。默认情况下，trident每次执行都接受一个批处理，您应该通过更改topology.max.spout.pending属性来增加这个计数。由于Trident强制有序事务管理，因此您的执行方法(NEO4JTridentFunction)必须快速以达到所需的解决方案。

此外，您还可以使用“TridentConfig.FetchSizeBytes”，通过更改它，您可以为喷点中的每个新发射调用摄取更多数据。

此外，您必须检查您的垃圾收集日志，它将给您的线索关于real point。