[MAPREDUCE-6096] SummarizedJob class NPEs with some jhist files

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Component/s: jobhistoryserver
• Labels: easyfix patch pull-request-available
• Target Version/s: 2.8.3
• Assignee: zhangyubiao
• Reporter: zhangyubiao
• Due: 30/Sep/14
• Created: 18/Sep/14 08:14
• Updated: 04/Oct/21 18:12

Description

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() ?

Issue Links

• links to: GitHub Pull Request #1