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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4880) Running TestZKRMStateStorePerf with real zookeeper cluster throws NPE
Date Sat, 26 Mar 2016 09:02:25 GMT

    [ https://issues.apache.org/jira/browse/YARN-4880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15212894#comment-15212894

Sunil G commented on YARN-4880:

Oh Yes. This can run an independent java app also.We also can try initialize it while declaring
itself, because null check will have to be done in all inits. Its fine both ways :)

> Running TestZKRMStateStorePerf with real zookeeper cluster throws NPE
> ---------------------------------------------------------------------
>                 Key: YARN-4880
>                 URL: https://issues.apache.org/jira/browse/YARN-4880
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Rohith Sharma K S
> While going throw TestZKRMStateStorePerf class , found that we are not initializing variable
{{TestingServer curatorTestingServer}} if real zookeeper cluster are passed to utility.  But
down the line , this variables are used which causes NPE
> I tested by passing program arguments which result in NPE
> {noformat} 
> SLF4J: Class path contains multiple SLF4J bindings.
> SLF4J: Found binding in [jar:file:/C:/Users/r00902292/.m2/repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> SLF4J: Found binding in [jar:file:/C:/Users/r00902292/.m2/repository/ch/qos/logback/logback-classic/1.1.2/logback-classic-1.1.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
> SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
> 2016-03-26 14:47:50,937 INFO  [main] recovery.TestZKRMStateStore (TestZKRMStateStorePerf.java:run(119))
- Starting ZKRMStateStorePerf ver.0.1
> java.lang.NullPointerException
> 	at org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStorePerf.initStore(TestZKRMStateStorePerf.java:102)
> 	at org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStorePerf.run(TestZKRMStateStorePerf.java:156)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
> 	at org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStorePerf.main(TestZKRMStateStorePerf.java:273)
> {noformat}
> There are 2 places variable {{curatorTestingServer}} used that need to be guarded with
null check.

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