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https://issues.apache.org/jira/browse/LENS-1029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15276278#comment-15276278
]
Hudson commented on LENS-1029:
------------------------------
UNSTABLE: Integrated in Lens-Commit #1237 (See
[https://builds.apache.org/job/Lens-Commit/1237/])
LENS-1029 : Fix exception handling in lens server snapshotter (amareshwari: rev
d264c9a44b3f0b889e87241a6eb9ec1051f7c6a5)
*
lens-query-lib/src/main/java/org/apache/lens/lib/query/AbstractFileFormatter.java
* src/site/apt/admin/deployment.apt
*
lens-server-api/src/main/java/org/apache/lens/server/api/LensConfConstants.java
* src/site/apt/admin/config.apt
* lens-server/src/main/java/org/apache/lens/server/LensServices.java
* lens-server/src/main/resources/lensserver-default.xml
* lens-server/src/test/java/org/apache/lens/server/TestServerRestart.java
> lens-server-snapshotter died in one of the scenarios
> ----------------------------------------------------
>
> Key: LENS-1029
> URL: https://issues.apache.org/jira/browse/LENS-1029
> Project: Apache Lens
> Issue Type: Bug
> Components: server
> Reporter: Amareshwari Sriramadasu
> Assignee: Puneet Gupta
> Priority: Critical
> Labels: incompatible
> Fix For: 2.6
>
> Attachments: lens-1029.v2.patch
>
>
> We have seen the following in our production:
> {noformat}
> 26 Apr 2016 14:00:11 [fffdab0b-47fc-4f03-a4d3-3002b1ac5f41]
> [lens-server-snapshotter] ERROR org.apache.lens.server.LensServer - Uncaught
> exception in Thread Thread[lens-server-snapshotter,5,main]
> java.lang.NullPointerException: null
> at
> org.apache.lens.lib.query.AbstractFileFormatter.writeExternal(AbstractFileFormatter.java:101)
> ~[lens-query-lib-2.6.1-inm.jar:2.6.1-inm]
> at
> java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1459)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1430)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
> ~[na:1.8.0_72]
> at
> org.apache.lens.lib.query.WrappedFileFormatter.writeExternal(WrappedFileFormatter.java:145)
> ~[lens-query-lib-2.6.1-inm.jar:2.6.1-inm]
> at
> java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1459)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1430)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
> ~[na:1.8.0_72]
> at
> java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
> ~[na:1.8.0_72]
> at
> org.apache.lens.server.query.QueryExecutionServiceImpl.writeExternal(QueryExecutionServiceImpl.java:2623)
> ~[classes/:na]
> at
> org.apache.lens.server.LensServices.persistLensServiceState(LensServices.java:337)
> ~[classes/:na]
> at
> org.apache.lens.server.LensServices.access$100(LensServices.java:57)
> ~[classes/:na]
> at org.apache.lens.server.LensServices$1.run(LensServices.java:277)
> ~[classes/:na]
> at java.util.TimerThread.mainLoop(Timer.java:555) ~[na:1.8.0_72]
> at java.util.TimerThread.run(Timer.java:505) ~[na:1.8.0_72]
> {noformat}
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