[jira] [Updated] (YARN-4880) Running TestZKRMStateStorePerf with real zookeeper cluster throws NPE

["Sunil G (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-4880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sunil G updated YARN-4880:
--------------------------
    Attachment: 0001-YARN-4880.patch

Thanks [~rohithsharma].
Attaching an initial patch to address the issue. 

Thank You.

> 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
>            Assignee: Sunil G
>         Attachments: 0001-YARN-4880.patch
>
>
> 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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