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Marcel Reutegger commented on OAK-8221: --------------------------------------- The exception indicates that most likely DocumentNodeStore 3 crashed and recovery is needed for this clusterId. The setup you have is minimal to have a DocumentNodeStore up and running but does not have any provisions for recovery of crashed DocumentNodeStore instances or revision garbage collection. See e.g. how this is done in [DocumentNodeStoreService|https://github.com/apache/jackrabbit-oak/blob/jackrabbit-oak-1.12.0/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreService.java#L791] when Oak is deployed in an OSGi container. Similarly, you should schedule revision garbage collection, though this is only necessary once in a cluster of DocumentNodeStore instances. See also https://jackrabbit.apache.org/oak/docs/nodestore/documentmk.html#revision-gc > Failure to do anything,throw CommitFailedException: OakMerge0004 > ---------------------------------------------------------------- > > Key: OAK-8221 > URL: https://issues.apache.org/jira/browse/OAK-8221 > Project: Jackrabbit Oak > Issue Type: Bug > Components: core > Reporter: zhouxu > Priority: Major > > Hello expert: > 1. To use Oak in my project simply add a dependency to > {{org.apache.jackrabbit:oak-jcr:1.10.2}} and to {{javax.jcr:jcr:2.0。}} > 2. we construct a Repository instance,use mongodb like this: > MongoClient > mongoClient=getMongoClient(mongodbIP,mongodbPort,dbName,userName,password); > DocumentNodeStore documentNodeStore = newMongoDocumentNodeStoreBuilder() > .setMongoDB(mongoClient, dbName, 0) > .setBlobStore(new FileBlobStore("D:\\amberdata\\FileStore")) > .build(); > Repository repository = new Jcr(new > Oak(documentNodeStore)).createRepository(); > 3.Every developer uses the oak of a local application to connect to the same > mongodb, > A few days later,We failed to unregister node type dw_unit_detail which we > registered,it takes a long time,and throw CommitFailedException: > OakMerge0004,like this: > javax.jcr.InvalidItemStateException: Failed to unregister node type > dw_unit_detail > at > org.apache.jackrabbit.oak.api.CommitFailedException.asRepositoryException(CommitFailedException.java:240) > at > org.apache.jackrabbit.oak.plugins.nodetype.write.ReadWriteNodeTypeManager.unregisterNodeType(ReadWriteNodeTypeManager.java:186) > at com.datamber.afc.domain.type.AfType.destroy(AfType.java:397) > at com.datamber.afc.domain.type.AfTypeTest.destroy(AfTypeTest.java:345) > 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) > at > org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) > at > org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) > at > org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) > at > org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) > at > org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) > at > org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) > at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) > at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) > at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) > at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) > at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) > at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) > at org.junit.runners.ParentRunner.run(ParentRunner.java:363) > at org.junit.runner.JUnitCore.run(JUnitCore.java:137) > at > com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) > at > com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) > at > com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) > at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) > Caused by: org.apache.jackrabbit.oak.api.CommitFailedException: OakMerge0004: > OakMerge0004: Following exceptions occurred during the bulk update > operations: [org.apache.jackrabbit.oak.plugins.document.ConflictException: > The node 3:/jcr:system/jcr:nodeTypes/dw_customize_type was changed in revision > r16a0699ff58-0-3 (not yet visible), which was applied after the base revision > r16a0b08f9b6-0-1,r16a067a0c76-0-2,r16a0699faf1-0-3,r16a072d9ee8-0-4,r16a069a45a1-0-5,r16a06874e87-0-6,r16a069be50a-0-7,r16a073313ba-0-8,r16a073e63ae-0-9,r16a0769307d-0-a,r16a0ae97b21-0-b,r16a0a0b1912-0-c,r16a0a0fa4e7-0-d,r16a0a4bbc67-0-e,r16a0a4438fc-0-f,r16a0ae19945-0-10, > before > r16a0b099334-0-1] (retries 5, 303136 ms) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.merge0(DocumentNodeStoreBranch.java:218) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.merge(DocumentNodeStoreBranch.java:127) > at > org.apache.jackrabbit.oak.plugins.document.DocumentRootBuilder.merge(DocumentRootBuilder.java:170) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore.merge(DocumentNodeStore.java:1848) > at org.apache.jackrabbit.oak.core.MutableRoot.commit(MutableRoot.java:250) > at org.apache.jackrabbit.oak.core.MutableRoot.commit(MutableRoot.java:261) > at > org.apache.jackrabbit.oak.plugins.nodetype.write.ReadWriteNodeTypeManager.unregisterNodeType(ReadWriteNodeTypeManager.java:182) > ... 26 more > Caused by: org.apache.jackrabbit.oak.plugins.document.ConflictException: > Following exceptions occurred during the bulk update operations: > [org.apache.jackrabbit.oak.plugins.document.ConflictException: The node > 3:/jcr:system/jcr:nodeTypes/dw_customize_type was changed in revision > r16a0699ff58-0-3 (not yet visible), which was applied after the base revision > r16a0b08f9b6-0-1,r16a067a0c76-0-2,r16a0699faf1-0-3,r16a072d9ee8-0-4,r16a069a45a1-0-5,r16a06874e87-0-6,r16a069be50a-0-7,r16a073313ba-0-8,r16a073e63ae-0-9,r16a0769307d-0-a,r16a0ae97b21-0-b,r16a0a0b1912-0-c,r16a0a0fa4e7-0-d,r16a0a4bbc67-0-e,r16a0a4438fc-0-f,r16a0ae19945-0-10, > before > r16a0b099334-0-1] > at > org.apache.jackrabbit.oak.plugins.document.Commit.checkConflicts(Commit.java:632) > at > org.apache.jackrabbit.oak.plugins.document.Commit.applyToDocumentStore(Commit.java:333) > at > org.apache.jackrabbit.oak.plugins.document.Commit.applyToDocumentStore(Commit.java:252) > at > org.apache.jackrabbit.oak.plugins.document.Commit.applyInternal(Commit.java:220) > at org.apache.jackrabbit.oak.plugins.document.Commit.apply(Commit.java:208) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.persist(DocumentNodeStoreBranch.java:310) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.persist(DocumentNodeStoreBranch.java:275) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.access$500(DocumentNodeStoreBranch.java:55) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch$InMemory.merge(DocumentNodeStoreBranch.java:531) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.merge0(DocumentNodeStoreBranch.java:194) > ... 32 more -- This message was sent by Atlassian JIRA (v7.6.3#76005)