hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6110) JobHistoryServer CLI throws NullPointerException with job ids that do not exist
Date Tue, 22 Mar 2016 22:38:25 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15207445#comment-15207445
] 

Hudson commented on MAPREDUCE-6110:
-----------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #9485 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/9485/])
MAPREDUCE-6110. JobHistoryServer CLI throws NullPointerException with (gtcarrera9: rev 57ead18a85e15aef1993f49157cf05aed38f1c87)
* hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/tools/CLI.java
* hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/tools/TestCLI.java


> JobHistoryServer CLI throws NullPointerException with job ids that do not exist
> -------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6110
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6110
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver
>            Reporter: Li Lu
>            Assignee: Kai Sasaki
>            Priority: Minor
>             Fix For: 2.9.0
>
>         Attachments: MAPREDUCE-6110.01.patch, MAPREDUCE-6110.02.patch, MAPREDUCE-6110.03.patch
>
>
> When using JobHistoryServer CLI to query a job id that does not exist on the server,
it may throw NullPointerException sometimes. 
> I tried "mapred job -events <some_wrong_jobId> 0 100", and the result was:
> Exception in thread "main" java.lang.NullPointerException
> 	at org.apache.hadoop.mapreduce.tools.CLI.listEvents(CLI.java:487)
> 	at org.apache.hadoop.mapreduce.tools.CLI.run(CLI.java:316)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
> 	at org.apache.hadoop.mapred.JobClient.main(JobClient.java:1237)
> Similar symptoms also appear with -list-attempt-ids, but were fine with -status and -set-priority.

> I traced back to CLI.listEvents, and line 487 is:
> {code}
> TaskCompletionEvent[] events = job.
>       getTaskCompletionEvents(fromEventId, numEvents);
> {code}
> The job object is obtained from JobID.forName(jobid)) (line 316), which will return null
if the job does not exist on server. 
> Maybe we want to have some behaviors consistent with -status here, by simply reporting
jobId does not exist? 



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message