我有一个Oozie作业,我从java客户端开始,它停留在START动作并且它说它正在运行,但是START节点处于PREP状态。
为什么这样以及如何解决问题?
Oozie工作流只包含一个java动作。群集上的Hadoop版本是2.4.0,集群上的Oozie是4.0.0。
这是workflow.xml
<workflow-app xmlns='uri:oozie:workflow:0.2' name='java-filecopy-wf'>
<start to='java1'/>
<action name='java1'>
<java>
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>default</value>
</property>
</configuration>
<main-class>testingoozieclient.Client</main-class>
<capture-output/>
</java>
<ok to="end" />
<error to="fail" />
</action>
<kill name="fail">
<message>Java failed, error message[${wf:errorMessage(wf:lastErrorNode())}]
</message>
</kill>
<end name='end' />
这是java客户端
OozieClient oozieClient = new OozieClient(args[0]);
Properties conf = oozieClient.createConfiguration();
conf.setProperty(OozieClient.APP_PATH, args[1]);
conf.setProperty("nameNode", args[2]);
conf.setProperty("jobTracker", args[3]);
String jobId = null;
try{
jobId = oozieClient.run(conf);
}
catch(OozieClientException ex){
Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
}
由于我尝试了几次,现在有5,6个工作流都以RUNNING作为状态,但是当我通过Web界面查看时,我可以看到所有这些工作流都停留在PREP状态的START节点上?
在一些提交的工作流程被杀后,我能够启动另一个工作流程。这次工作流从开始到java动作,但以类似的方式陷入java动作 - 它保持在PREP状态。
这是日志的样子
2015-06-22 17:54:37,366 INFO ActionStartXCommand:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] Start action [0000030-150619153616589-oozie-oozi-W@:start:] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10]
2015-06-22 17:54:37,367 WARN ActionStartXCommand:542 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] [***0000030-150619153616589-oozie-oozi-W@:start:***]Action status=DONE
2015-06-22 17:54:37,367 WARN ActionStartXCommand:542 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] [***0000030-150619153616589-oozie-oozi-W@:start:***]Action updated in DB!
2015-06-22 17:54:37,426 INFO ActionEndXCommand:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] end executor for wf action 0000030-150619153616589-oozie-oozi-W with wf job 0000030-150619153616589-oozie-oozi-W
2015-06-22 17:54:37,676 INFO ActionStartXCommand:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] Start action [0000030-150619153616589-oozie-oozi-W@java1] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10]
2015-06-22 17:54:38,316 INFO JavaActionExecutor:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] addShareLib: using FileSystem hdfs://master:8020
2015-06-22 17:54:38,501 WARN JavaActionExecutor:542 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] credentials is null for the action
2015-06-22 17:54:38,640 INFO JavaActionExecutor:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] addShareLib: using FileSystem hdfs://master:8020
今天早上我发现作业状态为SUSPENDED,启动节点正常,但是Java节点处于START-RETRY状态,出现以下错误 - JA006:从master02.novalocal / 192.168.111.52调用master02.novalocal :8032连接异常失败:java.net.ConnectException:连接被拒绝;有关详细信息,请参阅:http://wiki.apache.org/hadoop/ConnectionRefused
我应该强调Oozie与资源管理器在同一台机器上工作,所以很奇怪它试图在同一台机器上启动工作流程,但是说连接失败了。
以下是Oozie的工作日志:
2015-06-22 17:54:37,366 INFO ActionStartXCommand:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] Start action [0000030-150619153616589-oozie-oozi-W@:start:] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10]
2015-06-22 17:54:37,367 WARN ActionStartXCommand:542 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] [***0000030-150619153616589-oozie-oozi-W@:start:***]Action status=DONE
2015-06-22 17:54:37,367 WARN ActionStartXCommand:542 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] [***0000030-150619153616589-oozie-oozi-W@:start:***]Action updated in DB!
2015-06-22 17:54:37,426 INFO ActionEndXCommand:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@:start:] end executor for wf action 0000030-150619153616589-oozie-oozi-W with wf job 0000030-150619153616589-oozie-oozi-W
2015-06-22 17:54:37,676 INFO ActionStartXCommand:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] Start action [0000030-150619153616589-oozie-oozi-W@java1] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10]
2015-06-22 17:54:38,316 INFO JavaActionExecutor:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] addShareLib: using FileSystem hdfs://master01.novalocal:8020
2015-06-22 17:54:38,501 WARN JavaActionExecutor:542 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] credentials is null for the action
2015-06-22 17:54:38,640 INFO JavaActionExecutor:539 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] addShareLib: using FileSystem hdfs://master01.novalocal:8020
2015-06-22 20:05:33,340 WARN ActionStartXCommand:542 - USER[hadoop] GROUP[-] TOKEN[] APP[java-filecopy-wf] JOB[0000030-150619153616589-oozie-oozi-W] ACTION[0000030-150619153616589-oozie-oozi-W@java1] Error starting action [java1]. ErrorType [TRANSIENT], ErrorCode [ JA006], Message [ JA006: Call From master02.novalocal/192.168.111.52 to master02.novalocal:8032 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused]
org.apache.oozie.action.ActionExecutorException: JA006: Call From master02.novalocal/192.168.111.52 to master02.novalocal:8032 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at org.apache.oozie.action.ActionExecutor.convertExceptionHelper(ActionExecutor.java:412)
at org.apache.oozie.action.ActionExecutor.convertException(ActionExecutor.java:392)
at org.apache.oozie.action.hadoop.JavaActionExecutor.submitLauncher(JavaActionExecutor.java:837)
at org.apache.oozie.action.hadoop.JavaActionExecutor.start(JavaActionExecutor.java:988)
at org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:215)
at org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:60)
at org.apache.oozie.command.XCommand.call(XCommand.java:280)
at org.apache.oozie.service.CallableQueueService$CompositeCallable.call(CallableQueueService.java:326)
at org.apache.oozie.service.CallableQueueService$CompositeCallable.call(CallableQueueService.java:255)
at org.apache.oozie.service.CallableQueueService$CallableWrapper.run(CallableQueueService.java:175)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.net.ConnectException: Call From master02.novalocal/192.168.111.52 to master02.novalocal:8032 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.GeneratedConstructorAccessor98.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:783)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:730)
at org.apache.hadoop.ipc.Client.call(Client.java:1414)
at org.apache.hadoop.ipc.Client.call(Client.java:1363)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy42.getDelegationToken(Unknown Source)
at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getDelegationToken(ApplicationClientProtocolPBClientImpl.java:282)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:190)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:103)
at com.sun.proxy.$Proxy43.getDelegationToken(Unknown Source)
at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.getRMDelegationToken(YarnClientImpl.java:452)
at org.apache.hadoop.mapred.ResourceMgrDelegate.getDelegationToken(ResourceMgrDelegate.java:166)
at org.apache.hadoop.mapred.YARNRunner.getDelegationToken(YARNRunner.java:220)
at org.apache.hadoop.mapreduce.Cluster.getDelegationToken(Cluster.java:400)
at org.apache.hadoop.mapred.JobClient$16.run(JobClient.java:1203)
at org.apache.hadoop.mapred.JobClient$16.run(JobClient.java:1200)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1594)
at org.apache.hadoop.mapred.JobClient.getDelegationToken(JobClient.java:1199)
at org.apache.oozie.service.HadoopAccessorService.createJobClient(HadoopAccessorService.java:377)
at org.apache.oozie.action.hadoop.JavaActionExecutor.createJobClient(JavaActionExecutor.java:1031)
at org.apache.oozie.action.hadoop.JavaActionExecutor.submitLauncher(JavaActionExecutor.java:786)
... 10 more
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:735)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:529)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:493)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:604)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:699)
at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:367)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1462)
at org.apache.hadoop.ipc.Client.call(Client.java:1381)
... 33 more
答案 0 :(得分:1)
请检查job.properties中的端口 这通常是namenode和jobtracker端口的问题。 确保job.properties文件中的jobtracker端口正确。
答案 1 :(得分:1)
oozie作业陷入PREP状态(最终进入START_MANUAL状态)的主要原因是错误配置Hadoop服务端口。
nameNode=hdfs://localhost:9000
jobTracker=10.71.71.15:8032
如果您正在运行YARN,那么jobtracker的默认端口与资源管理器的端口相同。
此外,尝试修复其他端口问题,例如jobhistoryserver's port
(如oozie错误消息中所述)。
答案 2 :(得分:0)
我敢打赌你的map-reduce群集必须用完插槽。查看配置了多少个映射插槽。
还要尝试弄清楚端口8032上的服务是否已启动。您可以使用命令sudo netstat -netulp | grep 8032.如果没有返回输出,则服务关闭。您还可以使用nmap或telnet检查连接。
答案 3 :(得分:0)
命令:
netstat -ntpl | grep 8032
查看端口号是否已打开。 如果不是,则需要使用端口号启动服务。
答案 4 :(得分:0)
在我的情况下,问题是由于YARN被停止了。我启动了它,工作流程取得了进展。