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Posted to common-dev@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2008/09/24 15:04:44 UTC
[jira] Commented: (HADOOP-4262) message generated when the client
exception has a null message is not useful
[ https://issues.apache.org/jira/browse/HADOOP-4262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12634127#action_12634127 ]
Steve Loughran commented on HADOOP-4262:
----------------------------------------
fuller stack trace: [sf-startdaemon-debug] Caused by: java.io.IOException: Call to localhost/127.0.0.1:8012 failed on local exception: null
[sf-startdaemon-debug] at org.apache.hadoop.ipc.Client.call(Client.java:699)
[sf-startdaemon-debug] at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216)
[sf-startdaemon-debug] at org.apache.hadoop.mapred.$Proxy6.getJobProfile(Unknown Source)
[sf-startdaemon-debug] at org.apache.hadoop.mapred.JobClient$NetworkedJob.<init>(JobClient.java:179)
[sf-startdaemon-debug] at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:828)
[sf-startdaemon-debug] at org.smartfrog.services.hadoop.components.submitter.SubmitterImpl.sfStart(SubmitterImpl.java:104)
[sf-startdaemon-debug] ... 11 more
[sf-startdaemon-debug] Caused by: java.io.EOFException
[sf-startdaemon-debug] at java.io.DataInputStream.readInt(DataInputStream.java:375)
[sf-startdaemon-debug] at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:493)
[sf-startdaemon-debug] at org.apache.hadoop.ipc.Client$Connection.run(Client.java:438)
I propose that if the getMessage() value is null, then instead the classname of the excepetion is picked up instead. So the expected text would be
Caused by: java.io.IOException: Call to localhost/127.0.0.1:8012 failed on local exception: java.io.EOFException
> message generated when the client exception has a null message is not useful
> ----------------------------------------------------------------------------
>
> Key: HADOOP-4262
> URL: https://issues.apache.org/jira/browse/HADOOP-4262
> Project: Hadoop Core
> Issue Type: Bug
> Components: ipc
> Affects Versions: 0.19.0, 0.20.0
> Reporter: Steve Loughran
> Priority: Minor
>
> This was created by HADOOP-3844; if the exception doesn't have a meaningful message, the output isn't that informative :
> java.io.IOException: Call to localhost/127.0.0.1:8012 failed on local exception: null
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