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https://issues.apache.org/jira/browse/JCR-3873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shashank Gupta reassigned JCR-3873:
-----------------------------------
Assignee: Shashank Gupta
> CachingDataStore not safe against crashes, corrupted uploads file will
> prevent system startup
> ---------------------------------------------------------------------------------------------
>
> Key: JCR-3873
> URL: https://issues.apache.org/jira/browse/JCR-3873
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: jackrabbit-data
> Affects Versions: 2.9.1
> Reporter: Alexander Klimetschek
> Assignee: Shashank Gupta
>
> An NPE in OAK-2811 lead to the data store not being closed normally on
> shutdown, in turn leaving the {{async-pending-uploads.ser}} file corrupted
> (on this system, binaries were constantly uploaded, so likely the queue to
> upload it to S3 in this case was still full) and then on the next startup,
> the CachingDataStore failed to start up, preventing the repository and the
> system from starting:
> {noformat}
> 24.04.2015 13:21:28.602 *ERROR* [FelixStartLevel]
> org.apache.jackrabbit.oak-core
> [org.apache.jackrabbit.oak.plugins.blob.datastore.S3DataStore(79)] The
> activate method has thrown an exception (javax.jcr.RepositoryException:
> java.io.EOFException)
> javax.jcr.RepositoryException: java.io.EOFException
> at
> org.apache.jackrabbit.core.data.CachingDataStore.init(CachingDataStore.java:337)
> at
> org.apache.jackrabbit.oak.plugins.blob.datastore.AbstractDataStoreService.activate(AbstractDataStoreService.java:61)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:222)
> at
> org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:37)
> at
> org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:615)
> at
> org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:499)
> at
> org.apache.felix.scr.impl.helper.ActivateMethod.invoke(ActivateMethod.java:295)
> at
> org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:302)
> at
> org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:113)
> at
> org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:832)
> at
> org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:799)
> at
> org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:724)
> at
> org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:399)
> at
> org.apache.felix.scr.impl.config.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:669)
> at
> org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:184)
> at
> org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:332)
> at org.apache.felix.scr.impl.Activator.access$000(Activator.java:49)
> at
> org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:257)
> at
> org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:259)
> at
> org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:232)
> at
> org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:482)
> at
> org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:415)
> at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232)
> at
> org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)
> at
> org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:913)
> at
> org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)
> at
> org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)
> at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4531)
> at org.apache.felix.framework.Felix.startBundle(Felix.java:2169)
> at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1368)
> at
> org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.io.EOFException: null
> at
> java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2325)
> at
> java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2794)
> at
> java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:801)
> at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
> at
> org.apache.jackrabbit.core.data.AsyncUploadCache.deserializeAsyncUploadMap(AsyncUploadCache.java:311)
> at
> org.apache.jackrabbit.core.data.AsyncUploadCache.init(AsyncUploadCache.java:243)
> at
> org.apache.jackrabbit.core.data.CachingDataStore.init(CachingDataStore.java:264)
> ... 35 common frames omitted
> {noformat}
> We had to manually remove the file so that the system would start again.
> AFAIU, this meant some data loss.
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