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https://issues.apache.org/jira/browse/MAPREDUCE-6240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14306109#comment-14306109
]
Mohammad Kamrul Islam commented on MAPREDUCE-6240:
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if provider1 and provider2 both failed, the user will get only the provider 1
error. He will not get any error for provider 2 that may be resolved easily by
the user.
My understanding is : if any one provider is fine then cluster is initialized
properly. This good case is handled correctly. But when all failed, we would
not have full stack traces for both. In some instances, resolving the provider
2 may be easier than provider 1.
right?
> Hadoop client displays confusing error message
> ----------------------------------------------
>
> Key: MAPREDUCE-6240
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6240
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client
> Reporter: Mohammad Kamrul Islam
> Assignee: Mohammad Kamrul Islam
> Attachments: MAPREDUCE-6240-gera.001.patch,
> MAPREDUCE-6240-gera.001.patch, MAPREDUCE-6240.1.patch
>
>
> Hadoop client often throws exception with "java.io.IOException: Cannot
> initialize Cluster. Please check your configuration for
> mapreduce.framework.name and the correspond server addresses".
> This is a misleading and generic message for any cluster initialization
> problem. It takes a lot of debugging hours to identify the root cause. The
> correct error message could resolve this problem quickly.
> In one such instance, Oozie log showed the following exception while the
> root cause was CNF that Hadoop client didn't return in the exception.
> {noformat}
> JA009: Cannot initialize Cluster. Please check your configuration for
> mapreduce.framework.name and the correspond server addresses.
> 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:979)
> at
> org.apache.oozie.action.hadoop.JavaActionExecutor.start(JavaActionExecutor.java:1134)
> at
> org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:228)
> at
> org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:63)
> at org.apache.oozie.command.XCommand.call(XCommand.java:281)
> at
> org.apache.oozie.service.CallableQueueService$CompositeCallable.call(CallableQueueService.java:323)
> at
> org.apache.oozie.service.CallableQueueService$CompositeCallable.call(CallableQueueService.java:252)
> at
> org.apache.oozie.service.CallableQueueService$CallableWrapper.run(CallableQueueService.java:174)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> Caused by: java.io.IOException: Cannot initialize Cluster. Please check your
> configuration for mapreduce.framework.name and the correspond server
> addresses.
> at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:120)
> at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:82)
> at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:75)
> at org.apache.hadoop.mapred.JobClient.init(JobClient.java:470)
> at org.apache.hadoop.mapred.JobClient.<init>(JobClient.java:449)
> at
> org.apache.oozie.service.HadoopAccessorService$1.run(HadoopAccessorService.java:372)
> at
> org.apache.oozie.service.HadoopAccessorService$1.run(HadoopAccessorService.java:370)
> 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:1548)
> at
> org.apache.oozie.service.HadoopAccessorService.createJobClient(HadoopAccessorService.java:379)
> at
> org.apache.oozie.action.hadoop.JavaActionExecutor.createJobClient(JavaActionExecutor.java:1185)
> at
> org.apache.oozie.action.hadoop.JavaActionExecutor.submitLauncher(JavaActionExecutor.java:927)
> ... 10 more
> {noformat}
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