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https://issues.apache.org/jira/browse/OAK-1204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13827535#comment-13827535
]
Chetan Mehrotra commented on OAK-1204:
--------------------------------------
*Exception - E3* Observed only once so far
{noformat}
2013-11-20 16:24:07,725 INFO NA [MongoNodeStore background thread]
o.a.j.o.p.m.MongoNodeStore - Split operation on 1:/oak:index. Size before:
135802, after: 96656
2013-11-20 16:25:33,458 ERROR NA [pool-10-thread-4]
o.a.s.c.s.impl.QuartzScheduler - Exception during job execution of
org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate@5f4519b9 :
java.lang.NullPointerException
com.google.common.util.concurrent.UncheckedExecutionException:
java.lang.NullPointerException
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199)
~[na:na]
at com.google.common.cache.LocalCache.get(LocalCache.java:3932) ~[na:na]
at
com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4721)
~[na:na]
at
org.apache.jackrabbit.oak.plugins.mongomk.MongoMK.diff(MongoMK.java:162)
~[na:na]
at
org.apache.jackrabbit.oak.kernel.KernelNodeState.compareAgainstBaseState(KernelNodeState.java:480)
~[na:na]
at
org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
~[na:na]
at
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:129)
~[na:na]
at
org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:119)
~[na:na]
at
org.apache.jackrabbit.oak.spi.state.AbstractNodeState.compareAgainstBaseState(AbstractNodeState.java:281)
~[na:na]
at
org.apache.jackrabbit.oak.kernel.KernelNodeState.compareAgainstBaseState(KernelNodeState.java:487)
~[na:na]
at
org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
~[na:na]
at
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:129)
~[na:na]
at
org.apache.jackrabbit.oak.kernel.KernelNodeState.processJsonDiff(KernelNodeState.java:663)
~[na:na]
at
org.apache.jackrabbit.oak.kernel.KernelNodeState.compareAgainstBaseState(KernelNodeState.java:481)
~[na:na]
at
org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
~[na:na]
at
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:129)
~[na:na]
at
org.apache.jackrabbit.oak.kernel.KernelNodeState.processJsonDiff(KernelNodeState.java:663)
~[na:na]
at
org.apache.jackrabbit.oak.kernel.KernelNodeState.compareAgainstBaseState(KernelNodeState.java:481)
~[na:na]
at
org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
~[na:na]
at
org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.run(AsyncIndexUpdate.java:103)
~[na:na]
at
org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:105)
~[org.apache.sling.commons.scheduler:2.4.2]
at org.quartz.core.JobRunShell.run(JobRunShell.java:207)
[org.apache.sling.commons.scheduler:2.4.2]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
[na:1.7.0_40]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_40]
at java.lang.Thread.run(Thread.java:724) [na:1.7.0_40]
Caused by: java.lang.NullPointerException: null
at
org.apache.jackrabbit.oak.plugins.mongomk.MongoMK.diffFewChildren(MongoMK.java:314)
~[na:na]
at
org.apache.jackrabbit.oak.plugins.mongomk.MongoMK.diffImpl(MongoMK.java:224)
~[na:na]
at
org.apache.jackrabbit.oak.plugins.mongomk.MongoMK$1.call(MongoMK.java:165)
~[na:na]
at
org.apache.jackrabbit.oak.plugins.mongomk.MongoMK$1.call(MongoMK.java:162)
~[na:na]
at
com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4724)
~[na:na]
at
com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3522)
~[na:na]
at
com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2315)
~[na:na]
at
com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2278)
~[na:na]
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2193)
~[na:na]
... 24 common frames omitted
{noformat}
> Run two instances of Oak based systems against a single Mongo DB in a cluster
> -----------------------------------------------------------------------------
>
> Key: OAK-1204
> URL: https://issues.apache.org/jira/browse/OAK-1204
> Project: Jackrabbit Oak
> Issue Type: Task
> Components: mongomk
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
>
> To checkout the cluster support we should run two Sling based systems running
> on Oak in a cluster using Mongo. Post that analyse if any exception is
> reported and identify issues related to those
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