Major Description
Running
benchmark FlatTreeWithAceForSamePrincipalTest Oak-Mongo
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:
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 ...
Obviously obtaining child node9285 from /a switches from a trunk revision to a branch revision. This look suspicious.
[1]
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)