Apache storm 在Storm 0.10.0上，即使我将workers设置为1，并且UI报告workers=1，也会启动2个worker进程

我有一个风暴拓扑，我做：

setNumWorkers（1）

当我查看此运行拓扑上的storm UI报告时，我看到Num workers设置为
1

但是，当我登录到运行supervisor的节点时，我看到两个进程对
-Dworker.id
和
-Dworker.port
具有相同的设置

我包括
ps
显示的以下两个过程的输出

我的问题是：如果我只请求了一个进程，为什么会有两个进程被配置为工作进程（注意：Storm UI确认我只有一个工作进程）

这对我来说很重要，因为当我对我的拓扑所消耗的资源进行任何分析或分析时，我想知道应该集中在哪个进程上

ps输出

为了防止阅读本文的人试图更好地了解我的环境，这里是我的Storm docker配置（以及其他内容）。希望这能有所帮助

version: '2'
services:
  zookeeper:
    image: wurstmeister/zookeeper
    container_name: zk
    hostname: zk
    ports:
      - "2181:2181"
    networks:
      storm:
  kafka:
     image: wurstmeister/kafka:0.8.2.2-1
     container_name: kafka
     hostname: kafka
     ports:
       - "9092:9092"
     environment:
       KAFKA_BROKER_ID: 1
       KAFKA_ADVERTISED_HOST_NAME: 10.211.55.4
       KAFKA_ZOOKEEPER_CONNECT: 10.211.55.4
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
  nimbus:
    image: sunside/storm-nimbus
    container_name: storm-nimbus
    hostname: storm-nimbus
    ports:
        - "49773:49772"
        - "49772:49773"
        - "49627:49627"
    environment:
        - "LOCAL_HOSTNAME=nimbus"
        - "ZOOKEEPER_ADDRESS=zk"
        - "ZOOKEEPER_PORT=2181"
        - "NIMBUS_ADDRESS=nimbus"
        - "NIMBUS_THRIFT_PORT=49627"
        - "DRPC_PORT=49772"
        - "DRPCI_PORT=49773"
    volumes:
      - /media/psf/Home/dev/storm-pipeline:/pipeline
    networks:
      storm:
  supervisor:
    image: sunside/storm-supervisor
    container_name: storm-supervisor
    hostname: storm-supervisor
    ports:
      - "8000:8000"
    environment:
      - "LOCAL_HOSTNAME=supervisor"
      - "NIMBUS_ADDRESS=nimbus"
      - "NIMBUS_THRIFT_PORT=49627"
      - "DRPC_PORT=49772"
      - "DRPCI_PORT=49773"
      - "ZOOKEEPER_ADDRESS=zk"
      - "ZOOKEEPER_PORT=2181"
    networks:
      storm:
  ui:
    image: sunside/storm-ui
    container_name: storm-ui
    hostname: storm-ui
    ports:
      - "8888:8080"
    environment:
      - "LOCAL_HOSTNAME=ui"
      - "NIMBUS_ADDRESS=nimbus"
      - "NIMBUS_THRIFT_PORT=49627"
      - "DRPC_PORT=49772"
      - "DPRCI_PORT=49773"
      - "ZOOKEEPER_ADDRESS=zk"
      - "ZOOKEEPER_PORT=2181"
    networks:
      storm:
  elasticsearch:
    image: elasticsearch:2.3
    container_name:  elasticsearch
    hostname: elasticsearch
    ports:
      - "9200:9200"
    networks:
      storm:
networks:
  storm:
    external: true

答案是这两个进程中有一个是真正的“worker”进程（正在执行的类是backtype.storm.daemon.worker）。。。响应“ps”命令打印出来的另一个进程是日志编写器进程，由类backtype.storm.LogWriter执行

我应该在这两个进程的输出行中注意到这一点。哦，好吧。。。。现在我们知道了
 多亏了霍顿工厂的迪普纳·贝恩斯（Deepna Bains）的支持，我们发现了预期结果和我们得到的结果之间差异的原因。
version: '2'
services:
  zookeeper:
    image: wurstmeister/zookeeper
    container_name: zk
    hostname: zk
    ports:
      - "2181:2181"
    networks:
      storm:
  kafka:
     image: wurstmeister/kafka:0.8.2.2-1
     container_name: kafka
     hostname: kafka
     ports:
       - "9092:9092"
     environment:
       KAFKA_BROKER_ID: 1
       KAFKA_ADVERTISED_HOST_NAME: 10.211.55.4
       KAFKA_ZOOKEEPER_CONNECT: 10.211.55.4
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
  nimbus:
    image: sunside/storm-nimbus
    container_name: storm-nimbus
    hostname: storm-nimbus
    ports:
        - "49773:49772"
        - "49772:49773"
        - "49627:49627"
    environment:
        - "LOCAL_HOSTNAME=nimbus"
        - "ZOOKEEPER_ADDRESS=zk"
        - "ZOOKEEPER_PORT=2181"
        - "NIMBUS_ADDRESS=nimbus"
        - "NIMBUS_THRIFT_PORT=49627"
        - "DRPC_PORT=49772"
        - "DRPCI_PORT=49773"
    volumes:
      - /media/psf/Home/dev/storm-pipeline:/pipeline
    networks:
      storm:
  supervisor:
    image: sunside/storm-supervisor
    container_name: storm-supervisor
    hostname: storm-supervisor
    ports:
      - "8000:8000"
    environment:
      - "LOCAL_HOSTNAME=supervisor"
      - "NIMBUS_ADDRESS=nimbus"
      - "NIMBUS_THRIFT_PORT=49627"
      - "DRPC_PORT=49772"
      - "DRPCI_PORT=49773"
      - "ZOOKEEPER_ADDRESS=zk"
      - "ZOOKEEPER_PORT=2181"
    networks:
      storm:
  ui:
    image: sunside/storm-ui
    container_name: storm-ui
    hostname: storm-ui
    ports:
      - "8888:8080"
    environment:
      - "LOCAL_HOSTNAME=ui"
      - "NIMBUS_ADDRESS=nimbus"
      - "NIMBUS_THRIFT_PORT=49627"
      - "DRPC_PORT=49772"
      - "DPRCI_PORT=49773"
      - "ZOOKEEPER_ADDRESS=zk"
      - "ZOOKEEPER_PORT=2181"
    networks:
      storm:
  elasticsearch:
    image: elasticsearch:2.3
    container_name:  elasticsearch
    hostname: elasticsearch
    ports:
      - "9200:9200"
    networks:
      storm:
networks:
  storm:
    external: true