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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-17758) LogSearch Integration NullPointerException when LogSearch connection not available
Date Sun, 17 Jul 2016 02:49:20 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-17758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15381057#comment-15381057
] 

Hudson commented on AMBARI-17758:
---------------------------------

SUCCESS: Integrated in Ambari-trunk-Commit #5327 (See [https://builds.apache.org/job/Ambari-trunk-Commit/5327/])
AMBARI-17758. LogSearch Integration NullPointerException when LogSearch (rnettleton: [http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=200778b425563de6e4b5a88e7fb2614dbae8178d])
* ambari-server/src/main/java/org/apache/ambari/server/controller/logging/LogSearchDataRetrievalService.java
* ambari-server/src/main/java/org/apache/ambari/server/controller/logging/LoggingSearchPropertyProvider.java
* ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingSearchPropertyProviderTest.java
* ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LogSearchDataRetrievalServiceTest.java
* ambari-server/src/main/java/org/apache/ambari/server/controller/ControllerModule.java


> LogSearch Integration NullPointerException when LogSearch connection not available
> ----------------------------------------------------------------------------------
>
>                 Key: AMBARI-17758
>                 URL: https://issues.apache.org/jira/browse/AMBARI-17758
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.4.0
>            Reporter: Robert Nettleton
>            Assignee: Robert Nettleton
>            Priority: Critical
>             Fix For: 2.4.0
>
>         Attachments: AMBARI-17758.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> The following NullPointerException can occur intermittently in the LogSearch integration
code in the Ambari REST layer:
> {code}
> java.lang.NullPointerException
> 	at org.apache.ambari.server.controller.logging.LogSearchDataRetrievalService.getLogFileTailURI(LogSearchDataRetrievalService.java:159)
> 	at org.apache.ambari.server.controller.logging.LoggingSearchPropertyProvider.populateResources(LoggingSearchPropertyProvider.java:92)
> 	at org.apache.ambari.server.controller.internal.ClusterControllerImpl.populateResources(ClusterControllerImpl.java:155)
> 	at org.apache.ambari.server.api.query.QueryImpl.queryForSubResources(QueryImpl.java:500)
> 	at org.apache.ambari.server.api.query.QueryImpl.queryForSubResources(QueryImpl.java:503)
> 	at org.apache.ambari.server.api.query.QueryImpl.queryForResources(QueryImpl.java:454)
> 	at org.apache.ambari.server.api.query.QueryImpl.execute(QueryImpl.java:222)
> 	at org.apache.ambari.server.api.handlers.ReadHandler.handleRequest(ReadHandler.java:77)
> 	at org.apache.ambari.server.api.services.BaseRequest.process(BaseRequest.java:145)
> 	at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:126)
> 	at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:90)
> 	at org.apache.ambari.server.api.services.ClusterService.getCluster(ClusterService.java:91)
> 	at sun.reflect.GeneratedMethodAccessor255.invoke(Unknown Source)
> {code}
> While the code that calls the LogSearchDataRetrievalService already has a check to determine
if the LoggingRequestHelper is available (non-null), there is a change that a service might
be stopped or crashes unexpected in between the initial check and this call.  
> This is usually an intermittent exception.
> The LogSearchDataRetrievalService should be updated to include a check for null when
attempting to access the LoggingRequestHelper implementation.
> I'm working on a fix for this, and will be submitting a patch shortly.



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