Tomek Rękawek created OAK-7476:
----------------------------------

             Summary: The Azure readSegment should return null if no segment is 
found
                 Key: OAK-7476
                 URL: https://issues.apache.org/jira/browse/OAK-7476
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: segment-tar
            Reporter: Tomek Rękawek
             Fix For: 1.10, 1.9.1


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04.05.2018 10:41:43.085 *ERROR* [FelixStartLevel] 
org.apache.jackrabbit.oak.segment.SegmentNotFoundExceptionListener Segment not 
found: c2e583b9-f9ab-4e20-a7a7-638727a7537d. SegmentId age=1ms
org.apache.jackrabbit.oak.segment.SegmentNotFoundException: Segment 
c2e583b9-f9ab-4e20-a7a7-638727a7537d not found
        at 
org.apache.jackrabbit.oak.segment.file.AbstractFileStore.asSegmentNotFoundException(AbstractFileStore.java:143)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.file.FileStore.readSegment(FileStore.java:464)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.SegmentId.getSegment(SegmentId.java:154) 
[org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.CachingSegmentReader$2.apply(CachingSegmentReader.java:118)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.CachingSegmentReader$2.apply(CachingSegmentReader.java:114)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.ReaderCache.get(ReaderCache.java:118) 
[org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.CachingSegmentReader.readTemplate(CachingSegmentReader.java:114)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.SegmentNodeState.getTemplate(SegmentNodeState.java:110)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.SegmentNodeState.getChildNode(SegmentNodeState.java:421)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.SegmentNodeStore.getRoot(SegmentNodeStore.java:182)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.spi.cluster.ClusterRepositoryInfo.getOrCreateId(ClusterRepositoryInfo.java:68)
 [org.apache.jackrabbit.oak-store-spi:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.SegmentNodeStoreService.registerSegmentStore(SegmentNodeStoreService.java:659)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.SegmentNodeStoreFactory.activate(SegmentNodeStoreFactory.java:141)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        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)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Caused by: com.google.common.util.concurrent.UncheckedExecutionException: 
java.lang.NullPointerException
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199) 
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        at com.google.common.cache.LocalCache.get(LocalCache.java:3932) 
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        at 
com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4721) 
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        at 
org.apache.jackrabbit.oak.segment.SegmentCache$NonEmptyCache.getSegment(SegmentCache.java:161)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.file.FileStore.readSegment(FileStore.java:462)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        ... 48 common frames omitted
Caused by: java.lang.NullPointerException: null
        at 
org.apache.jackrabbit.oak.segment.azure.AzureSegmentArchiveReader.readSegment(AzureSegmentArchiveReader.java:73)
 [org.apache.jackrabbit.oak-segment-azure:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.file.tar.TarReader.readEntry(TarReader.java:310)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.file.tar.TarFiles.readSegment(TarFiles.java:500)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.file.AbstractFileStore.readSegmentUncached(AbstractFileStore.java:267)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.file.FileStore.lambda$readSegment$9(FileStore.java:462)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
org.apache.jackrabbit.oak.segment.SegmentCache$NonEmptyCache.lambda$getSegment$0(SegmentCache.java:164)
 [org.apache.jackrabbit.oak-segment-tar:1.9.0.R1830742]
        at 
com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4724)
 [com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        at 
com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3522)
 [com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        at 
com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2315) 
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        at 
com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2278)
 [com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2193) 
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
        ... 52 common frames omitted
{noformat}



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