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From "LiXin Ge (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-6903) NPE occured when run MapredTestDriver's testcase
Date Thu, 22 Jun 2017 09:23:00 GMT
LiXin Ge created MAPREDUCE-6903:
-----------------------------------

             Summary: NPE occured when run MapredTestDriver's testcase
                 Key: MAPREDUCE-6903
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6903
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: test
    Affects Versions: 3.0.0-alpha4
            Reporter: LiXin Ge
            Assignee: LiXin Ge


When runing the timelineperformance test from MapredTestDriver without input parameter, an
NPE was throwed:
{quote}
./hadoop org.apache.hadoop.test.MapredTestDriver timelineperformance
...
2017-06-08 09:32:13,194 ERROR mapreduce.SimpleEntityWriterV1: writing to the timeline service
failed
java.lang.NullPointerException
	at org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.putEntities(TimelineClientImpl.java:178)
	at org.apache.hadoop.mapreduce.SimpleEntityWriterV1.map(SimpleEntityWriterV1.java:82)
	at org.apache.hadoop.mapreduce.SimpleEntityWriterV1.map(SimpleEntityWriterV1.java:41)
	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:793)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
	at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:271)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
{quote}
That's better to add a protection of NULL pointer check.



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