java - 在集群中运行 Storm，不会调用清理

Question

我有以下 Storm 拓扑代码，我在集群上运行:

TopologyBuilder builder = new TopologyBuilder();
builder.setSpout("word-reader", new WordReader());
builder.setBolt("word-normalizer", new WordNormalizer())
        .shuffleGrouping("word-reader");
builder.setBolt("word-counter", new WordCounter()).fieldsGrouping(
        "word-normalizer", new Fields("word"));
Config conf = new Config();
conf.put("wordsFile", args[0]);
conf.setDebug(false);
conf.put(Config.TOPOLOGY_MAX_SPOUT_PENDING, 1);
try {
    StormSubmitter.submitTopology("Test-topology", conf,
            builder.createTopology());
} catch (AlreadyAliveException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (InvalidTopologyException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

当我调试它时，以下 cleanup()方法不在类中运行 WordCounter ...

@Override
public void cleanup() {
    System.out.println("-- Word Counter --");
}

...并且拓扑未完成运行。

Answer 1

cleanup()

当您 shutdown() 在本地模式下被调用您的 localcluster .但在 storm kill 时不在您的生产集群上被执行或从 nimbus 服务器中删除(在生产集群上永远不会调用清理，它只在本地模式下)

        // Keep commented if submitting to production cluster, since no
        // automatic shutdown is required on production cluster
        try {
            // Runs for specified number of ms after submitting topology on
            // local cluster and then resumes itself and shutdowns the
            // local cluster
            Thread.sleep(10000);
            objOfLocalCluster.shutdown();
        } catch (InterruptedException e) {
            // Prints a stack trace for this Throwable object on the error
            // output stream..
            e.printStackTrace();
        } 

欲知更多详情:转至此 docs
同样的事情发生在 close() 也(用于喷口)了解有关该支票的更多详细信息 here