storm 的子节点机器重启后 supervisor无法启动

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#storm #java.io.EOFException #localstate

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当Storm集群中的子节点机器重启后，遇到Supervisor无法启动的问题，主要表现为java.io.EOFException。解决步骤包括：1) 查找storm.yaml配置文件，找到storm.local.dir的路径；2) 移除指定路径下/supervisor/localstate的所有文件，建议先备份；3) 重新启动Supervisor服务。

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2016-07-27 22:32:42 o.a.c.f.s.ConnectionStateManager [INFO] State change: CONNECTED
2016-07-27 22:32:42 o.a.c.f.s.ConnectionStateManager [WARN] There are no ConnectionStateListeners registered.
2016-07-27 22:32:42 b.s.d.supervisor [INFO] Starting supervisor with id 5ad46693-1c4f-4705-9a02-edd8cca9bf64 at host slave2
2016-07-27 22:32:43 b.s.event [ERROR] Error when processing event
java.lang.RuntimeException: java.io.EOFException
        at backtype.storm.utils.Utils.deserialize(Utils.java:93) ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
        at backtype.storm.utils.LocalState.snapshot(LocalState.java:45) ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
        at backtype.storm.utils.LocalState.get(LocalState.java:56) ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
        at backtype.storm.daemon.supervisor$sync_processes.invoke(supervisor.clj:207) ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
        at clojure.lang.AFn.applyToHelper(AFn.java:161) [clojure-1.5.1.jar:na]
        at clojure.lang.AFn.applyTo(AFn.java:151) [clojure-1.5.1.jar:na]
        at clojure.core$apply.invoke(core.clj:619) ~[clojure-1.5.1.jar:na]
        at clojure.core$partial$fn__4190.doInvoke(core.clj:2396) ~[clojure-1.5.1.jar:na]
        at clojure.lang.RestFn.invoke(RestFn.java:397) ~[clojure-1.5.1.jar:na]
        at backtype.storm.event$event_manager$fn__2378.invoke(event.clj:39) ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
        at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na]
        at java.lang.Thread.run(Thread.java:722) [na:1.7.0_09]
Caused by: java.io.EOFException: null
        at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2298) ~[na:1.7.0_09]
        at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2767) ~[na:1.7.0_09]
        at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:798) ~[na:1.7.0_09]
        at java.io.ObjectInputStream.<init>(ObjectInputStream.java:298) ~[na:1.7.0_09]
        at backtype.storm.utils.Utils.deserialize(Utils.java:88) ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
        ... 11 common frames omitted
2016-07-27 22:32:43 b.s.util [INFO] Halting process: ("Error when processing an event")

-------------------上面是报错信息 ---------- 下面是解决方法-----------------------------------

1、查找storem的配置文件storm.yaml ，storm.local.dir的值是什么，我的是/data/storm/workdir

2、删除/data/storm/workdir/supervisor/localstate/下的所有文件，（注意：最好先移走，确认没问题再删除）

3、重启supervisor