如何解决 apachestorm worker 崩溃问题

Question

我在 Apache Storm 1.1.1 上运行了一个 python 代码（通过 streamparse），最近注意到 Storm 工作人员不断崩溃。以下是我从工作人员日志中找到的内容。我想不出什么是罪魁祸首，因为日志没有给我足够的线索。拓扑之前工作得很好。知道我还可以从哪里开始研究吗？

2019-08-28 15:05:32.947 o.a.s.s.ShellSpout Thread-11-event_spout-executor[10 10] [INFO] Launched subprocess with pid 10054
2019-08-28 15:05:32.951 o.a.s.d.executor Thread-11-event_spout-executor[10 10] [INFO] Opened spout event_spout:(10)
2019-08-28 15:05:32.953 o.a.s.d.executor Thread-11-event_spout-executor[10 10] [INFO] Activating spout event_spout:(10)
2019-08-28 15:05:32.953 o.a.s.s.ShellSpout Thread-11-event_spout-executor[10 10] [INFO] Start checking heartbeat...
2019-08-28 15:05:32.961 o.a.s.util Thread-11-event_spout-executor[10 10] [ERROR] Async loop died!
java.lang.RuntimeException: pid:10054, name:event_spout exitCode:-1, errorString:
        at org.apache.storm.spout.ShellSpout.querySubprocess(ShellSpout.java:218) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.spout.ShellSpout.sendSyncCommand(ShellSpout.java:145) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.spout.ShellSpout.activate(ShellSpout.java:266) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.daemon.executor$fn__4962$fn__4977$fn__5008.invoke(executor.clj:641) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.util$async_loop$fn__557.invoke(util.clj:484) [storm-core-1.1.1.jar:1.1.1]
        at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]
Caused by: java.lang.RuntimeException: org.apache.storm.multilang.NoOutputException: Pipe to subprocess seems to be broken! No output read.
Serializer Exception:
        at org.apache.storm.utils.ShellProcess.readShellMsg(ShellProcess.java:127) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.spout.ShellSpout.querySubprocess(ShellSpout.java:183) ~[storm-core-1.1.1.jar:1.1.1]
        ... 6 more
2019-08-28 15:05:32.968 o.a.s.d.executor Thread-11-event_spout-executor[10 10] [ERROR]
java.lang.RuntimeException: pid:10054, name:event_spout exitCode:-1, errorString:
        at org.apache.storm.spout.ShellSpout.querySubprocess(ShellSpout.java:218) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.spout.ShellSpout.sendSyncCommand(ShellSpout.java:145) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.spout.ShellSpout.activate(ShellSpout.java:266) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.daemon.executor$fn__4962$fn__4977$fn__5008.invoke(executor.clj:641) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.util$async_loop$fn__557.invoke(util.clj:484) [storm-core-1.1.1.jar:1.1.1]
        at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]
Caused by: java.lang.RuntimeException: org.apache.storm.multilang.NoOutputException: Pipe to subprocess seems to be broken! No output read.
Serializer Exception:
        at org.apache.storm.utils.ShellProcess.readShellMsg(ShellProcess.java:127) ~[storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.spout.ShellSpout.querySubprocess(ShellSpout.java:183) ~[storm-core-1.1.1.jar:1.1.1]
        ... 6 more
2019-08-28 15:05:33.009 o.a.s.util Thread-11-event_spout-executor[10 10] [ERROR] Halting process: ("Worker died")
java.lang.RuntimeException: ("Worker died")
        at org.apache.storm.util$exit_process_BANG_.doInvoke(util.clj:341) [storm-core-1.1.1.jar:1.1.1]
        at clojure.lang.RestFn.invoke(RestFn.java:423) [clojure-1.7.0.jar:?]
        at org.apache.storm.daemon.worker$fn__5632$fn__5633.invoke(worker.clj:763) [storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.daemon.executor$mk_executor_data$fn__4848$fn__4849.invoke(executor.clj:276) [storm-core-1.1.1.jar:1.1.1]
        at org.apache.storm.util$async_loop$fn__557.invoke(util.clj:494) [storm-core-1.1.1.jar:1.1.1]
        at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]
2019-08-28 15:05:33.018 o.a.s.d.worker Thread-16 [INFO] Shutting down worker tmon-4-1567019114 ba5b3695-b390-4c3e-9d92-af0771f17b86 6700

Answer 1

每当我在外部进程螺栓（例如 Python 螺栓）中看到序列化程序异常时，我怀疑外部进程正在将某些内容打印到标准输出流。

Storm 利用bolt 进程的stdin/stdout 进行自己的通信，Python bolts 中的任何日志记录都应该写入stderr 或文件。