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From "Stefan Egli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-4107) NPE in MongoDocumentStore.determineServerTimeDifferenceMillis
Date Wed, 09 Mar 2016 08:33:40 GMT

    [ https://issues.apache.org/jira/browse/OAK-4107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15186752#comment-15186752
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Stefan Egli commented on OAK-4107:
----------------------------------

sounds odd to see {{db.command("serverStatus").getDate("localTime")}} being null .. perhaps
depending on a particular mongo-os combination? a hickup of mongod? perhaps the log file would
contain a hint..

> NPE in MongoDocumentStore.determineServerTimeDifferenceMillis
> -------------------------------------------------------------
>
>                 Key: OAK-4107
>                 URL: https://issues.apache.org/jira/browse/OAK-4107
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: mongomk
>            Reporter: Chetan Mehrotra
>            Assignee: Stefan Egli
>            Priority: Minor
>             Fix For: 1.6
>
>
> On system startup with Mongo following exception is seen
> {noformat}
> 07.03.2016 06:26:10.529 *WARN* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreService
registerNodeStore: got RuntimeException while trying to determine time difference to server:
java.lang.NullPointerException
> java.lang.NullPointerException: null
> 	at org.apache.jackrabbit.oak.plugins.document.mongo.MongoDocumentStore.determineServerTimeDifferenceMillis(MongoDocumentStore.java:1568)
> 	at org.apache.jackrabbit.oak.plugins.document.util.LeaseCheckDocumentStoreWrapper.determineServerTimeDifferenceMillis(LeaseCheckDocumentStoreWrapper.java:203)
> 	at org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreService.registerNodeStore(DocumentNodeStoreService.java:514)
> 	at org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreService.registerNodeStoreIfPossible(DocumentNodeStoreService.java:371)
> 	at org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreService.bindBlobStore(DocumentNodeStoreService.java:554)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> {noformat}
> Per code {{serverLocalTime}} appears to be null
> {code}
>  final Date serverLocalTime = db.command("serverStatus").getDate("localTime");
>         final long end = System.currentTimeMillis();
>         final long midPoint = (start + end) / 2;
>         final long serverLocalTimeMillis = serverLocalTime.getTime();
> {code}



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