apache-storm mixed topology with python - ModuleNotFoundError: No module named 'storm'

apache-storm mixed topology with python - ModuleNotFoundError: No module named 'storm'

我正在尝试创建混合风暴拓扑,它使用基于 Java 的喷口和基于 python 的螺栓。

对于基于 python 的螺栓,我写了一个 Java 包装器:

class PythonBolt extends ShellBolt implements IRichBolt {

    public PythonBolt() {
        super("python", "C:\somepath\sample.py");
    }
    @Override
    public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {
    }

    @Override
    public Map<String, Object> getComponentConfiguration() {
        return null;
    }
}

这是我的 sample.py 的样子:

导入风暴

class SplitSentenceBolt(storm.BasicBolt):
    def process(self, tup):
        print("Python rocks!")
        words = tup.values[0].split(" ")
        print(tup.values[0])

SplitSentenceBolt().run()

然后我将它们放在一起并尝试通过以下代码段运行:

public class SampleBolt {

    public static void main(String[] args) throws Exception {
        TopologyBuilder builder = new TopologyBuilder();
        builder.setSpout("Hello", new RawDataLevelSpout(), 12);
        builder.setBolt("World", new PythonBolt(), 12);

        Config config = new Config();
        config.setDebug(true);


        LocalCluster cluster = new LocalCluster();
        cluster.submitTopology("Hello-World-BaiJian", config, builder.createTopology());
        Utils.sleep(100000);
        cluster.killTopology("Hello-World-BaiJian");
        cluster.shutdown();
    }
}

一切正常启动,但是,我收到以下异常:

import storm
ModuleNotFoundError: No module named 'storm'

    at org.apache.storm.utils.ShellProcess.launch(ShellProcess.java:94) ~[storm-client-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
    at org.apache.storm.task.ShellBolt.prepare(ShellBolt.java:154) ~[storm-client-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
    at org.apache.storm.executor.bolt.BoltExecutor.init(BoltExecutor.java:84) ~[storm-client-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
    at org.apache.storm.executor.bolt.BoltExecutor.call(BoltExecutor.java:93) ~[storm-client-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
    at org.apache.storm.executor.bolt.BoltExecutor.call(BoltExecutor.java:45) ~[storm-client-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
    at org.apache.storm.utils.Utils.run(Utils.java:329) ~[storm-client-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]

关于如何克服这个问题的任何提示?如何安装 python 风暴包?可以通过Anaconda安装吗(我没找到包)?

当您从 IDE 中 运行 时,我不确定多语言支持是否适用于 LocalCluster。参见 。在该回答之后的对话中似乎提到了一个解决方法。

只为未来的人们 - 信息非常准确。我只是错过了我的 sample.py 所在的同一文件夹中的 storm.py。只需将以下文件:https://github.com/apache/storm/blob/v1.2.1/storm-multilang/python/src/main/resources/resources/storm.py 添加到该文件夹​​即可解决问题! 也可以通过 LocalCluster 运行 此代码。