Tomek Rękawek created OAK-8528:
----------------------------------

             Summary: The Azure Journal implementation doesn't split after 
exceeding JOURNAL_LINE_LIMIT
                 Key: OAK-8528
                 URL: https://issues.apache.org/jira/browse/OAK-8528
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: segment-azure
            Reporter: Tomek Rękawek


The AzureJournalFile should split after exceeding 40_000 lines. However, it 
doesn't happen, which results in:

{noformat}
06.08.2019 10:22:34.926 *WARN* [TarMK flush 
[/opt/aem/launcher/repository/segmentstore-composite-global]] 
org.apache.jackrabbit.oak.segment.file.FileStore Failed to flush the TarMK at 
/opt/aem/launcher/repository/segmentstore-composite-global
java.io.IOException: null
    at 
com.microsoft.azure.storage.core.Utility.initIOException(Utility.java:737)
    at 
com.microsoft.azure.storage.blob.BlobOutputStreamInternal.appendBlock(BlobOutputStreamInternal.java:487)
    at 
com.microsoft.azure.storage.blob.BlobOutputStreamInternal.access$200(BlobOutputStreamInternal.java:52)
    at 
com.microsoft.azure.storage.blob.BlobOutputStreamInternal$3.call(BlobOutputStreamInternal.java:420)
    at 
com.microsoft.azure.storage.blob.BlobOutputStreamInternal$3.call(BlobOutputStreamInternal.java:417)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: com.microsoft.azure.storage.StorageException: The committed block 
count cannot exceed the maximum limit of 50,000 blocks.
    at 
com.microsoft.azure.storage.StorageException.translateException(StorageException.java:89)
    at 
com.microsoft.azure.storage.core.StorageRequest.materializeException(StorageRequest.java:305)
    at 
com.microsoft.azure.storage.core.ExecutionEngine.executeWithRetry(ExecutionEngine.java:175)
    at 
com.microsoft.azure.storage.blob.CloudAppendBlob.appendBlock(CloudAppendBlob.java:414)
    at 
com.microsoft.azure.storage.blob.BlobOutputStreamInternal.appendBlock(BlobOutputStreamInternal.java:467)
    ... 9 common frames omitted 
{noformat}



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