[jira] [Resolved] (OAK-7194) Threads are going in blocked state - OAK segment

["Michael Dürig (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-7194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Dürig resolved OAK-7194.
--------------------------------
    Resolution: Incomplete

> Threads are going in blocked state - OAK segment
> ------------------------------------------------
>
>                 Key: OAK-7194
>                 URL: https://issues.apache.org/jira/browse/OAK-7194
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>    Affects Versions: 1.6.2
>            Reporter: Kshitiz Garg
>            Priority: Critical
>
> We are using AEM and it internally is using OAK 1.6.2. Our application is going to a choked state many a times. Our thread dump analysis is always pointing to this stack trace with many blocked threads. Is it a known issue? Or is there a setting to avoid it? We are using tar files based repository underneath and are using default settings:
>  
> {noformat}
> - nativeId:0x1208 - state:BLOCKED
> stackTrace:
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.jackrabbit.oak.segment.SegmentId.getSegment(SegmentId.java:121)
> - waiting to lock <0x0000000414d8c250> (a org.apache.jackrabbit.oak.segment.SegmentId)
> at org.apache.jackrabbit.oak.segment.Record.getSegment(Record.java:70)
> at org.apache.jackrabbit.oak.segment.MapRecord.getEntry(MapRecord.java:160)
> at org.apache.jackrabbit.oak.segment.MapRecord.getEntry(MapRecord.java:192)
> at org.apache.jackrabbit.oak.segment.MapRecord.getEntry(MapRecord.java:192)
> at org.apache.jackrabbit.oak.segment.MapRecord.getEntry(MapRecord.java:192)
> at org.apache.jackrabbit.oak.segment.SegmentNodeState.getChildNode(SegmentNodeState.java:412)
> at org.apache.jackrabbit.oak.plugins.tree.impl.ImmutableTree.createChild(ImmutableTree.java:125)
> at org.apache.jackrabbit.oak.plugins.tree.impl.ImmutableTree.getChild(ImmutableTree.java:176)
> at org.apache.jackrabbit.oak.plugins.tree.impl.ImmutableTree.getChild(ImmutableTree.java:81)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionUtil.getPrincipalRoot(PermissionUtil.java:83)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionStoreImpl.getPrincipalRoot(PermissionStoreImpl.java:132)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionStoreImpl.getNumEntries(PermissionStoreImpl.java:103)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionEntryCache.getNumEntries(PermissionEntryCache.java:102)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionEntryProviderImpl.init(PermissionEntryProviderImpl.java:79)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionEntryProviderImpl.<init>(PermissionEntryProviderImpl.java:72)
> at org.apache.jackrabbit.oak.security.authorization.permission.CompiledPermissionImpl.<init>(CompiledPermissionImpl.java:112)
> at org.apache.jackrabbit.oak.security.authorization.permission.CompiledPermissionImpl.create(CompiledPermissionImpl.java:126)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionProviderImpl.getCompiledPermissions(PermissionProviderImpl.java:162)
> at org.apache.jackrabbit.oak.security.authorization.permission.PermissionProviderImpl.getTreePermission(PermissionProviderImpl.java:151)
> at org.apache.jackrabbit.oak.security.authorization.composite.CompositeTreePermission.create(CompositeTreePermission.java:67)
> at org.apache.jackrabbit.oak.security.authorization.composite.CompositePermissionProvider.getTreePermission(CompositePermissionProvider.java:147)
> at org.apache.jackrabbit.oak.core.SecureNodeBuilder.getTreePermission(SecureNodeBuilder.java:357)
> at org.apache.jackrabbit.oak.core.SecureNodeBuilder.getTreePermission(SecureNodeBuilder.java:360)
> at org.apache.jackrabbit.oak.core.SecureNodeBuilder.getTreePermission(SecureNodeBuilder.java:360)
> at org.apache.jackrabbit.oak.core.SecureNodeBuilder.access$100(SecureNodeBuilder.java:49)
> at org.apache.jackrabbit.oak.core.SecureNodeBuilder$ReadablePropertyPredicate.apply(SecureNodeBuilder.java:377)
> at org.apache.jackrabbit.oak.core.SecureNodeBuilder.getProperty(SecureNodeBuilder.java:184)
> at org.apache.jackrabbit.oak.plugins.tree.impl.AbstractTree.getProperty(AbstractTree.java:249)
> at org.apache.jackrabbit.oak.core.MutableTree.getProperty(MutableTree.java:128)
> at org.apache.jackrabbit.oak.util.TreeUtil.getStringInternal(TreeUtil.java:108)
> at org.apache.jackrabbit.oak.util.TreeUtil.getString(TreeUtil.java:101)
> at org.apache.jackrabbit.oak.namepath.GlobalNameMapper.getNamespacesProperty(GlobalNameMapper.java:191)
> at org.apache.jackrabbit.oak.namepath.GlobalNameMapper.getOakURIOrNull(GlobalNameMapper.java:187)
> - eliminated <0x000000070c692f50> (a org.apache.jackrabbit.oak.jcr.session.SessionNamespaces)
> at org.apache.jackrabbit.oak.jcr.session.SessionNamespaces.getNamespaceURI(SessionNamespaces.java:128)
> - locked <0x000000070c692f50> (a org.apache.jackrabbit.oak.jcr.session.SessionNamespaces)
> at org.apache.jackrabbit.oak.jcr.session.SessionImpl.getNamespaceURI(SessionImpl.java:738)
> at com.adobe.granite.repository.impl.CRX3SessionImpl.getNamespaceURI(CRX3SessionImpl.java:283)
> at org.apache.sling.resourceresolver.impl.JcrNamespaceMangler.unmangleNamespaces(JcrNamespaceMangler.java:97)
> at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.unmangleNamespaces(ResourceResolverImpl.java:1109)
> at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.resolveInternal(ResourceResolverImpl.java:263)
> at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.resolve(ResourceResolverImpl.java:250)
> at org.apache.sling.engine.impl.request.RequestData.initResource(RequestData.java:252)
> at org.apache.sling.engine.impl.SlingRequestProcessorImpl.doProcessRequest(SlingRequestProcessorImpl.java:140)
> at org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:219)
> at org.apache.felix.http.base.internal.handler.ServletHandler.handle(ServletHandler.java:85)
> at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:79)
> at com.adobe.granite.license.impl.LicenseCheckFilter.doFilter(LicenseCheckFilter.java:308)
> at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)
> at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)
> at org.apache.felix.http.sslfilter.internal.SslFilter.doFilter(SslFilter.java:96)
> at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)
> at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)
> at org.apache.sling.security.impl.ReferrerFilter.doFilter(ReferrerFilter.java:295)
> at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)
> at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)
> at org.apache.sling.i18n.impl.I18NFilter.doFilter(I18NFilter.java:138)
> at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)
> at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)
> at org.apache.sling.featureflags.impl.FeatureManager.doFilter(FeatureManager.java:116)
> at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)
> at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)
> at org.apache.sling.engine.impl.log.RequestLoggerFilter.doFilter(RequestLoggerFilter.java:72)
> at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)
> at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)
> at org.apache.felix.http.base.internal.dispatch.Dispatcher.dispatch(Dispatcher.java:128)
> at org.apache.felix.http.base.internal.dispatch.DispatcherServlet.service(DispatcherServlet.java:49)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
> at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)
> at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
> at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
> at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
> at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
> at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
> at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at org.eclipse.jetty.server.Server.handle(Server.java:499)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
> at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
> at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
> at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:748)
> Locked ownable synchronizers:
> - None
> {noformat}



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