[jira] [Created] (HADOOP-14546) [WASB] Concurrent I/O does not work when secure.mode is enabled.

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

Thomas created HADOOP-14546:
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             Summary: [WASB] Concurrent I/O does not work when secure.mode is enabled.
                 Key: HADOOP-14546
                 URL: https://issues.apache.org/jira/browse/HADOOP-14546
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/azure
    Affects Versions: 2.9.0, 3.0.0-alpha4
            Reporter: Thomas
            Assignee: Thomas
             Fix For: 2.9.0, 3.0.0-alpha4


This change allows the concurrent I/O feature (fs.azure.io.read.tolerate.concurrent.append = true) to work when secure mode is enabled (fs.azure.secure.mode = true).
    
While running the test TestAzureConcurrentOutOfBandIo.testReadOOBWrites, I discovered that it fails when fs.azure.secure.mode = true with the error below:
    
com.microsoft.azure.storage.StorageException: The condition specified using HTTP conditional header(s) is not met. 
  at com.microsoft.azure.storage.core.Utility.initIOException(Utility.java:733)
  at com.microsoft.azure.storage.blob.BlobInputStream.dispatchRead(BlobInputStream.java:264)
  at com.microsoft.azure.storage.blob.BlobInputStream.readInternal(BlobInputStream.java:448)
  at com.microsoft.azure.storage.blob.BlobInputStream.read(BlobInputStream.java:420)
  at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
  at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
  at java.io.DataInputStream.read(DataInputStream.java:149)
  at org.apache.hadoop.fs.azure.TestAzureConcurrentOutOfBandIo.testReadOOBWrites(TestAzureConcurrentOutOfBandIo.java:167)
    
There were a couple problems causing this failure:
    
1) AzureNativeFileSystemStore.connectToAzureStorageInSecureMode was disabling concurrent I/O by setting fs.azure.io.read.tolerate.concurrent.append to false.

2) SendRequestIntercept was unnecessarily updating the SAS for the request.  Since this intercept only sets the request header "If-Match: *" to override the existing recondition, it is not necessary to update the SAS.
    
The above issues have been fixed and a new test case has been added so that testReadOOBWrites now runs both with and without secure mode enabled.



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