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我收到一條錯誤信息,當我嘗試運行我的拓撲結構:風暴InvalidTopologyException
java.lang.reflect.InvocationTargetException
...
Caused by: InvalidTopologyException(msg:Component: [write] subscribes from non-existent stream: [default] of component [write])
這裏是我的拓撲聲明:
TopologyBuilder builder = new TopologyBuilder();
builder.setSpout("spout", spout, 1);
builder.setBolt("write", new PrinterBolt(), 1).shuffleGrouping("write");
這是怎麼回事?