Question

我有以下代码用于风暴拓扑，我在群集上运行：

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()方法不会在类WordCounter中运行...

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

...拓扑没有完成运行。

Answer 1

<强>清理（）

当您shutdown() localcluster时，以本地模式调用。但是当执行storm kill或从nimbus服务器中删除时，不会在生产集群上（从不在生产集群上调用清理，仅在本地模式下调用）

        // 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();
        }

有关详情：请转到此docs

对于该检查的更多详细信息， close() （也适用于鲸鱼喷水）也会发生同样的事情here

Answer 2

未在群集上调用清理。只是localMode

http://groups.google.com/group/storm-user/browse_thread/thread/1a7b4998e6599f83/9683ed2b34e2c027?hl=en&lnk=gst&q=clean+up#9683ed2b34e2c027

在集群中运行Storm，不会调用清理

2 个答案: