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From "zhangyubiao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6096) SummarizedJob class NPEs with some jhist files
Date Tue, 07 Jun 2016 14:29:21 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15318566#comment-15318566
] 

zhangyubiao commented on MAPREDUCE-6096:
----------------------------------------

I  wonder somebody could help me review the code please ? Thanks . [~aw] [~vinodkv] [~ozawa]

> SummarizedJob class NPEs with some jhist files
> ----------------------------------------------
>
>                 Key: MAPREDUCE-6096
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6096
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver
>            Reporter: zhangyubiao
>            Assignee: zhangyubiao
>              Labels: easyfix, patch
>         Attachments: MAPREDUCE-6096-v1.patch, MAPREDUCE-6096-v2.patch, MAPREDUCE-6096.patch,
job_1446203652278_66705-1446308686422-dd_edw-insert+overwrite+table+bkactiv...dp%3D%27ACTIVE%27%28Stage-1446308802181-233-0-SUCCEEDED-bdp_jdw_corejob.jhist
>
>
> When I Parse  the JobHistory in the HistoryFile,I use the Hadoop System's  map-reduce-client-core
project org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser  class and HistoryViewer$SummarizedJob
to Parse the JobHistoryFile(Just Like job_1408862281971_489761-1410883171851_XXX.jhist)  
> and it throw an Exception Just Like 
> Exception in thread "pool-1-thread-1" java.lang.NullPointerException
> 	at org.apache.hadoop.mapreduce.jobhistory.HistoryViewer$SummarizedJob.<init>(HistoryViewer.java:626)
> 	at com.jd.hadoop.log.parse.ParseLogService.getJobDetail(ParseLogService.java:70)
> After I'm see the SummarizedJob class I  find that attempt.getTaskStatus() is NULL ,
So I change the order of 
> attempt.getTaskStatus().equals (TaskStatus.State.FAILED.toString())  to 
> TaskStatus.State.FAILED.toString().equals(attempt.getTaskStatus()) 
> and it works well .
> So I wonder If we can change all  attempt.getTaskStatus()  after TaskStatus.State.XXX.toString()
?



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