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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2013/09/03 13:57:52 UTC
[jira] [Created] (OAK-992) NPE when running
FlatTreeWithAceForSamePrincipalTest on MongoMK
Michael Dürig created OAK-992:
---------------------------------
Summary: NPE when running FlatTreeWithAceForSamePrincipalTest on MongoMK
Key: OAK-992
URL: https://issues.apache.org/jira/browse/OAK-992
Project: Jackrabbit Oak
Issue Type: Bug
Reporter: Michael Dürig
Running
{code}
benchmark FlatTreeWithAceForSamePrincipalTest Oak-Mongo
{code}
results in a NPE [1] after a couple of minutes.
My initial analysis showed that {{MicroKernel.getNodes()}} returns {{null}} in {{KernelNodeState.init()}}. The requested revision was {{br140e35028e6-0-1}}, AFAICS a branch revision that doesn't exist any more.
Looking at the base state in {{KernelNodeStoreBranch.InMemory.merge()}} a couple of stack frames below I found the following:
{code}
base = /@r140e350df05-0-1 children: 5 id: /@r140e350df05-0-1 ...
base.getChildNode("a") = /a@r140e350df05-0-1 children: 9223372036854775807 id: /a@r140e350df05-0-1 ...
base.getChildNode("a").getChildNode("node9285") = /a/node9285@br140e35028e6-0-1 children: 1 id: /a/node9285@r140e34fdff7-0-1 ...
{code}
Obviously obtaining child {{node9285}} from {{/a}} switches from a trunk revision to a branch revision. This look suspicious.
[1]
{code}
java.lang.NullPointerException
at org.apache.jackrabbit.mk.json.JsopTokenizer.<init>(JsopTokenizer.java:41)
at org.apache.jackrabbit.mk.json.JsopTokenizer.<init>(JsopTokenizer.java:47)
at org.apache.jackrabbit.oak.kernel.KernelNodeState.init(KernelNodeState.java:160)
at org.apache.jackrabbit.oak.kernel.KernelNodeState.getProperty(KernelNodeState.java:251)
at org.apache.jackrabbit.oak.spi.state.AbstractNodeState.getName(AbstractNodeState.java:88)
at org.apache.jackrabbit.oak.plugins.index.property.PropertyIndexEditor.isOfMatchingType(PropertyIndexEditor.java:165)
at org.apache.jackrabbit.oak.plugins.index.property.PropertyIndexEditor.enter(PropertyIndexEditor.java:189)
at org.apache.jackrabbit.oak.spi.commit.VisibleEditor.enter(VisibleEditor.java:58)
at org.apache.jackrabbit.oak.spi.commit.CompositeEditor.enter(CompositeEditor.java:66)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:49)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:141)
at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:139)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:141)
at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:139)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:141)
at org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:380)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
at org.apache.jackrabbit.oak.spi.commit.EditorHook.processCommit(EditorHook.java:50)
at org.apache.jackrabbit.oak.spi.commit.CompositeHook.processCommit(CompositeHook.java:59)
at org.apache.jackrabbit.oak.spi.commit.CompositeHook.processCommit(CompositeHook.java:59)
at org.apache.jackrabbit.oak.kernel.KernelNodeStoreBranch$InMemory.merge(KernelNodeStoreBranch.java:287)
at org.apache.jackrabbit.oak.kernel.KernelNodeStoreBranch.merge(KernelNodeStoreBranch.java:136)
at org.apache.jackrabbit.oak.core.AbstractRoot$2.run(AbstractRoot.java:245)
at org.apache.jackrabbit.oak.core.AbstractRoot$2.run(AbstractRoot.java:241)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:337)
at org.apache.jackrabbit.oak.core.AbstractRoot.commit(AbstractRoot.java:240)
at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.save(SessionDelegate.java:281)
at org.apache.jackrabbit.oak.jcr.SessionImpl$8.perform(SessionImpl.java:394)
at org.apache.jackrabbit.oak.jcr.SessionImpl$8.perform(SessionImpl.java:391)
at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.perform(SessionDelegate.java:117)
at org.apache.jackrabbit.oak.jcr.SessionImpl.perform(SessionImpl.java:117)
at org.apache.jackrabbit.oak.jcr.SessionImpl.save(SessionImpl.java:391)
at org.apache.jackrabbit.oak.benchmark.FlatTreeWithAceForSamePrincipalTest.afterSuite(FlatTreeWithAceForSamePrincipalTest.java:89)
at org.apache.jackrabbit.oak.benchmark.AbstractTest.tearDown(AbstractTest.java:165)
at org.apache.jackrabbit.oak.benchmark.FlatTreeWithAceForSamePrincipalTest.tearDown(FlatTreeWithAceForSamePrincipalTest.java:31)
at org.apache.jackrabbit.oak.benchmark.AbstractTest.runTest(AbstractTest.java:130)
at org.apache.jackrabbit.oak.benchmark.AbstractTest.run(AbstractTest.java:91)
at org.apache.jackrabbit.oak.benchmark.FlatTreeWithAceForSamePrincipalTest.run(FlatTreeWithAceForSamePrincipalTest.java:31)
at org.apache.jackrabbit.oak.benchmark.BenchmarkRunner.main(BenchmarkRunner.java:126)
at org.apache.jackrabbit.oak.run.Main.main(Main.java:61)
{code}
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