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https://issues.apache.org/jira/browse/OAK-3373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14736696#comment-14736696
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Marcel Reutegger commented on OAK-3373:
---------------------------------------
bq. They are removed (ObserverTracker.removedService) from the old store and
then added (ObserverTracker.addingService) with the new store again.
In my view, this is what needs to be changed. Let's say the node store is
restarted because of a hypothetical re-configuration and now points to a
different DocumentStore. We don't support this right now, but we could in the
future. In this case, the state of the restarted node store my be completely
unrelated to the state of the node store before. I think an Observer should not
be re-registered as is with the new node store, but rather be reset with a new
base root state from the new node store.
> Observers dont survive store restart (was: LuceneIndexProvider:
> java.lang.IllegalStateException: open)
> ------------------------------------------------------------------------------------------------------
>
> Key: OAK-3373
> URL: https://issues.apache.org/jira/browse/OAK-3373
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core
> Affects Versions: 1.3.5
> Reporter: Stefan Egli
>
> The following exception occurs when stopping, then immediately re-starting
> the oak-core bundle (which was done as part of testing for OAK-3250 - but can
> be reproduced independently). It's not clear what the consequences are
> though..
> {code}08.09.2015 14:20:26.960 *ERROR* [oak-lucene-0]
> org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexProvider Uncaught
> exception in
> org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexProvider@3a4a6c5c
> org.apache.jackrabbit.oak.plugins.document.DocumentStoreException: Error
> occurred while fetching children for path /oak:index/authorizables
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentStoreException.convert(DocumentStoreException.java:48)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore.getChildren(DocumentNodeStore.java:902)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore.getChildNodes(DocumentNodeStore.java:1082)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState.getChildNodeEntries(DocumentNodeState.java:508)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState.access$100(DocumentNodeState.java:65)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState$ChildNodeEntryIterator.fetchMore(DocumentNodeState.java:716)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState$ChildNodeEntryIterator.<init>(DocumentNodeState.java:681)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState$1.iterator(DocumentNodeState.java:289)
> at
> org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:129)
> at
> org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:303)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState.compareAgainstBaseState(DocumentNodeState.java:359)
> at
> org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
> at
> org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:140)
> at
> org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:303)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState.compareAgainstBaseState(DocumentNodeState.java:359)
> at
> org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
> at
> org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:140)
> at
> org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:303)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeState.compareAgainstBaseState(DocumentNodeState.java:359)
> at
> org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexTracker.update(IndexTracker.java:108)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexProvider.contentChanged(LuceneIndexProvider.java:73)
> at
> org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:127)
> at
> org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:121)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.IllegalStateException: open
> at org.bson.util.Assertions.isTrue(Assertions.java:36)
> at
> com.mongodb.DBTCPConnector.isMongosConnection(DBTCPConnector.java:367)
> at com.mongodb.Mongo.isMongosConnection(Mongo.java:622)
> at com.mongodb.DBCursor._check(DBCursor.java:494)
> at com.mongodb.DBCursor._hasNext(DBCursor.java:621)
> at com.mongodb.DBCursor.hasNext(DBCursor.java:657)
> at
> org.apache.jackrabbit.oak.plugins.document.mongo.MongoDocumentStore.queryInternal(MongoDocumentStore.java:658)
> at
> org.apache.jackrabbit.oak.plugins.document.mongo.MongoDocumentStore.query(MongoDocumentStore.java:589)
> at
> org.apache.jackrabbit.oak.plugins.document.mongo.MongoDocumentStore.query(MongoDocumentStore.java:561)
> at
> org.apache.jackrabbit.oak.plugins.document.util.LeaseCheckDocumentStoreWrapper.query(LeaseCheckDocumentStoreWrapper.java:77)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore.readChildDocs(DocumentNodeStore.java:1003)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore.readChildren(DocumentNodeStore.java:933)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore$6.call(DocumentNodeStore.java:885)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore$6.call(DocumentNodeStore.java:882)
> at
> org.apache.jackrabbit.oak.cache.CacheLIRS$Segment.load(CacheLIRS.java:1004)
> at
> org.apache.jackrabbit.oak.cache.CacheLIRS$Segment.get(CacheLIRS.java:969)
> at org.apache.jackrabbit.oak.cache.CacheLIRS.get(CacheLIRS.java:280)
> at
> org.apache.jackrabbit.oak.plugins.document.persistentCache.NodeCache.get(NodeCache.java:116)
> at
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore.getChildren(DocumentNodeStore.java:882)
> ... 26 common frames omitted
> {code}
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