Apache Storm - Error on initialization (Worker)
<p>storm-1.0.1</p>

<p>my <strong>storm.yaml</strong>:</p>

<pre><code>storm.zookeper.servers:
  - "zookeper"

storm.zookeeper.port: 2181
# nimbus.host: "nimbus"
nimbus.seeds: ["nimbus"]
storm.local.dir: "/var/log/storm"
supervisor.slots.ports:
  - 6700
  - 6701
  - 6702
  - 6703
worker.childopts: "-Xmx768m"
nimbus.childopts: "-Xmx512m"
supervisor.childopts: "-Xmx256m"

storm.messaging.transport: "backtype.storm.messaging.netty.Context"
storm.messaging.netty.server_worker_threads: 1
storm.messaging.netty.client_worker_threads: 1
storm.messaging.netty.buffer_size: 5242880
storm.messaging.netty.max_retries: 100
storm.messaging.netty.max_wait_ms: 1000
storm.messaging.netty.min_wait_ms: 100
</code></pre>

<p>in my supervisor logs I see this:</p>

<pre><code>2016-08-26 19:22:28.023 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:28.523 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:28.883 o.a.s.d.supervisor [INFO] Worker Process b4a402ba-458d-4c4e-b167-143bd9134200 exited with code: 13
2016-08-26 19:22:28.956 o.a.s.d.supervisor [INFO] Worker Process c9718f4b-131f-4cfe-bce7-e3e448790a4e exited with code: 13
2016-08-26 19:22:28.966 o.a.s.d.supervisor [INFO] Worker Process d30be8b6-6ed0-496e-9d23-6879df1f1bdd exited with code: 13
2016-08-26 19:22:29.023 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:29.040 o.a.s.d.supervisor [INFO] Worker Process e80983c3-1ec6-4b25-9ef1-f29eb42194ae exited with code: 13
2016-08-26 19:22:29.524 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:30.024 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:30.524 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:31.025 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:31.525 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:32.025 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
2016-08-26 19:22:32.525 o.a.s.d.supervisor [INFO] e80983c3-1ec6-4b25-9ef1-f29eb42194ae still hasn't started
</code></pre>

<p>worker logs contain the error:</p>

<p><a href="http://nimbus:8000/log?file=wordcount2-8-1472263925%2F6701%2Fworker.log" rel="nofollow">http://nimbus:8000/log?file=wordcount2-8-1472263925%2F6701%2Fworker.log</a></p>

<pre><code>2016-08-26 19:28:39.016 o.a.s.s.o.a.z.ZooKeeper [INFO] Client environment:java.compiler=&lt;NA&gt;
2016-08-26 19:28:39.016 o.a.s.s.o.a.z.ZooKeeper [INFO] Client environment:os.name=Linux
2016-08-26 19:28:39.016 o.a.s.s.o.a.z.ZooKeeper [INFO] Client environment:os.arch=amd64
2016-08-26 19:28:39.016 o.a.s.s.o.a.z.ZooKeeper [INFO] Client environment:os.version=4.6.5-300.fc24.x86_64
2016-08-26 19:28:39.016 o.a.s.s.o.a.z.ZooKeeper [INFO] Client environment:user.name=dmitry
2016-08-26 19:28:39.016 o.a.s.s.o.a.z.ZooKeeper [INFO] Client environment:user.home=/home/dmitry
2016-08-26 19:28:39.016 o.a.s.s.o.a.z.ZooKeeper [INFO] Client environment:user.dir=/var/log/storm/workers/3abac0cb-5981-4a87-9ffb-ed2c8053108b
2016-08-26 19:28:39.017 o.a.s.s.o.a.z.ZooKeeper [INFO] Initiating client connection, connectString=localhost:2181 sessionTimeout=20000 watcher=org.apache.storm.shade.org.apache.curator.ConnectionState@79316f3a
2016-08-26 19:28:39.067 o.a.s.s.o.a.z.ClientCnxn [INFO] Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error)
2016-08-26 19:28:39.163 o.a.s.s.o.a.z.ClientCnxn [INFO] Socket connection established to localhost/0:0:0:0:0:0:0:1:2181, initiating session
2016-08-26 19:28:39.176 o.a.s.s.o.a.z.ClientCnxn [INFO] Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x156c953110f00d8, negotiated timeout = 20000
2016-08-26 19:28:39.180 o.a.s.s.o.a.c.f.s.ConnectionStateManager [INFO] State change: CONNECTED
2016-08-26 19:28:39.181 o.a.s.zookeeper [INFO] Zookeeper state update: :connected:none
2016-08-26 19:28:39.191 o.a.s.s.o.a.c.f.i.CuratorFrameworkImpl [INFO] backgroundOperationsLoop exiting
2016-08-26 19:28:39.198 o.a.s.s.o.a.z.ZooKeeper [INFO] Session: 0x156c953110f00d8 closed
2016-08-26 19:28:39.199 o.a.s.s.o.a.z.ClientCnxn [INFO] EventThread shut down
2016-08-26 19:28:39.201 o.a.s.s.o.a.c.f.i.CuratorFrameworkImpl [INFO] Starting
2016-08-26 19:28:39.201 o.a.s.s.o.a.z.ZooKeeper [INFO] Initiating client connection, connectString=localhost:2181/storm sessionTimeout=20000 watcher=org.apache.storm.shade.org.apache.curator.ConnectionState@3dd4a6fa
2016-08-26 19:28:39.212 o.a.s.s.o.a.z.ClientCnxn [INFO] Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error)
2016-08-26 19:28:39.213 o.a.s.s.o.a.z.ClientCnxn [INFO] Socket connection established to localhost/0:0:0:0:0:0:0:1:2181, initiating session
2016-08-26 19:28:39.220 o.a.s.s.o.a.z.ClientCnxn [INFO] Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x156c953110f00d9, negotiated timeout = 20000
2016-08-26 19:28:39.220 o.a.s.s.o.a.c.f.s.ConnectionStateManager [INFO] State change: CONNECTED
2016-08-26 19:28:39.250 o.a.s.s.a.AuthUtils [INFO] Got AutoCreds []
2016-08-26 19:28:39.254 o.a.s.d.worker [INFO] Reading Assignments.
2016-08-26 19:28:39.310 o.a.s.m.TransportFactory [INFO] Storm peer transport plugin:backtype.storm.messaging.netty.Context
2016-08-26 19:28:39.311 o.a.s.d.worker [ERROR] Error on initialization of server mk-worker
java.lang.RuntimeException: Fail to construct messaging plugin from plugin backtype.storm.messaging.netty.Context
    at org.apache.storm.messaging.TransportFactory.makeContext(TransportFactory.java:53) ~[storm-core-1.0.1.jar:1.0.1]
    at org.apache.storm.daemon.worker$worker_data.invoke(worker.clj:266) ~[storm-core-1.0.1.jar:1.0.1]
    at org.apache.storm.daemon.worker$fn__8450$exec_fn__2461__auto__$reify__8452.run(worker.clj:611) ~[storm-core-1.0.1.jar:1.0.1]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_101]
    at javax.security.auth.Subject.doAs(Subject.java:422) ~[?:1.8.0_101]
    at org.apache.storm.daemon.worker$fn__8450$exec_fn__2461__auto____8451.invoke(worker.clj:609) ~[storm-core-1.0.1.jar:1.0.1]
    at clojure.lang.AFn.applyToHelper(AFn.java:178) ~[clojure-1.7.0.jar:?]
    at clojure.lang.AFn.applyTo(AFn.java:144) ~[clojure-1.7.0.jar:?]
    at clojure.core$apply.invoke(core.clj:630) ~[clojure-1.7.0.jar:?]
    at org.apache.storm.daemon.worker$fn__8450$mk_worker__8545.doInvoke(worker.clj:583) [storm-core-1.0.1.jar:1.0.1]
    at clojure.lang.RestFn.invoke(RestFn.java:512) [clojure-1.7.0.jar:?]
    at org.apache.storm.daemon.worker$_main.invoke(worker.clj:771) [storm-core-1.0.1.jar:1.0.1]
    at clojure.lang.AFn.applyToHelper(AFn.java:165) [clojure-1.7.0.jar:?]
    at clojure.lang.AFn.applyTo(AFn.java:144) [clojure-1.7.0.jar:?]
    at org.apache.storm.daemon.worker.main(Unknown Source) [storm-core-1.0.1.jar:1.0.1]
Caused by: java.lang.ClassNotFoundException: backtype.storm.messaging.netty.Context
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_101]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_101]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[?:1.8.0_101]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_101]
    at java.lang.Class.forName0(Native Method) ~[?:1.8.0_101]
    at java.lang.Class.forName(Class.java:264) ~[?:1.8.0_101]
    at org.apache.storm.messaging.TransportFactory.makeContext(TransportFactory.java:38) ~[storm-core-1.0.1.jar:1.0.1]
    ... 14 more
2016-08-26 19:28:39.319 o.a.s.util [ERROR] Halting process: ("Error on initialization")
java.lang.RuntimeException: ("Error on initialization")
    at org.apache.storm.util$exit_process_BANG_.doInvoke(util.clj:341) [storm-core-1.0.1.jar:1.0.1]
    at clojure.lang.RestFn.invoke(RestFn.java:423) [clojure-1.7.0.jar:?]
    at org.apache.storm.daemon.worker$fn__8450$mk_worker__8545.doInvoke(worker.clj:583) [storm-core-1.0.1.jar:1.0.1]
    at clojure.lang.RestFn.invoke(RestFn.java:512) [clojure-1.7.0.jar:?]
    at org.apache.storm.daemon.worker$_main.invoke(worker.clj:771) [storm-core-1.0.1.jar:1.0.1]
    at clojure.lang.AFn.applyToHelper(AFn.java:165) [clojure-1.7.0.jar:?]
    at clojure.lang.AFn.applyTo(AFn.java:144) [clojure-1.7.0.jar:?]
    at org.apache.storm.daemon.worker.main(Unknown Source) [storm-core-1.0.1.jar:1.0.1]
</code></pre>

<p>nimbus is up and running </p>

<pre><code>(petrel) [dmitry:~/Projects/experiments/storm/petrel/chapter3/example1]$ netstat -an | grep 6627
69:tcp6       0      0 :::6627                 :::*                    LISTEN     
75:tcp6       0      0 192.168.14.164:48582    192.168.14.164:6627     ESTABLISHED
77:tcp6       0      0 192.168.14.164:49154    192.168.14.164:6627     ESTABLISHED
78:tcp6       0      0 192.168.14.164:48548    192.168.14.164:6627     ESTABLISHED
80:tcp6       0      0 192.168.14.164:6627     192.168.14.164:49154    ESTABLISHED
81:tcp6       0      0 192.168.14.164:48578    192.168.14.164:6627     ESTABLISHED
82:tcp6       0      0 192.168.14.164:6627     192.168.14.164:48064    ESTABLISHED
83:tcp6       0      0 192.168.14.164:6627     192.168.14.164:48484    ESTABLISHED
85:tcp6       0      0 192.168.14.164:48560    192.168.14.164:6627     ESTABLISHED
86:tcp6       0      0 192.168.14.164:49130    192.168.14.164:6627     ESTABLISHED
87:tcp6       0      0 192.168.14.164:6627     192.168.14.164:49380    ESTABLISHED
89:tcp6       0      0 192.168.14.164:6627     192.168.14.164:49148    ESTABLISHED
90:tcp6       0      0 192.168.14.164:48058    192.168.14.164:6627     ESTABLISHED
91:tcp6       0      0 192.168.14.164:49424    192.168.14.164:6627     TIME_WAIT  
92:tcp6       0      0 192.168.14.164:6627     192.168.14.164:48034    ESTABLISHED
93:tcp6       0      0 192.168.14.164:6627     192.168.14.164:48498    ESTABLISHED
</code></pre>

<p>As the error indicates the class <code>backtype.storm.messaging.netty.Context</code> is not found.</p>

<blockquote>
  <p>Caused by: java.lang.ClassNotFoundException: backtype.storm.messaging.netty.Context</p>
</blockquote>

<p>In Storm <code>1.0.0</code> the was a major refactoring renaming many packages. I guess you want to use <code>org.apache.storm.messaging.netty.Context</code> now.</p>

<pre><code>storm.messaging.transport: "org.apache.storm.messaging.netty.Context"
</code></pre>

<p>See <a href="https://storm.apache.org/releases/1.0.0/index.html" rel="nofollow">https://storm.apache.org/releases/1.0.0/index.html</a></p>

java python netty apache-storm