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https://issues.apache.org/jira/browse/HADOOP-15383?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16435848#comment-16435848
 ] 

Steve Loughran commented on HADOOP-15383:
-----------------------------------------

Stack
{code}

"main" #1 prio=5 os_prio=31 tid=0x00007fb187006800 nid=0x2403 waiting on 
condition [0x0000700002ddf000]
   java.lang.Thread.State: TIMED_WAITING (sleeping)
        at java.lang.Thread.sleep(Native Method)
        at 
com.microsoft.azure.storage.core.ExecutionEngine.executeWithRetry(ExecutionEngine.java:255)
        at 
com.microsoft.azure.storage.blob.CloudBlobContainer.exists(CloudBlobContainer.java:769)
        at 
com.microsoft.azure.storage.blob.CloudBlobContainer.exists(CloudBlobContainer.java:756)
        at 
org.apache.hadoop.fs.azure.StorageInterfaceImpl$CloudBlobContainerWrapperImpl.exists(StorageInterfaceImpl.java:233)
        at 
org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.connectUsingAnonymousCredentials(AzureNativeFileSystemStore.java:856)
        at 
org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.createAzureStorageSession(AzureNativeFileSystemStore.java:1081)
        at 
org.apache.hadoop.fs.azure.AzureNativeFileSystemStore.initialize(AzureNativeFileSystemStore.java:538)
        at 
org.apache.hadoop.fs.azure.NativeAzureFileSystem.initialize(NativeAzureFileSystem.java:1363)
        at 
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3354)
        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:124)
        at 
org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3403)
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3371)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:477)
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:361)
        at 
org.apache.hadoop.fs.store.diag.StoreDiag.executeFileSystemOperations(StoreDiag.java:450)
        at org.apache.hadoop.fs.store.diag.StoreDiag.run(StoreDiag.java:219)
        at org.apache.hadoop.fs.store.diag.StoreDiag.run(StoreDiag.java:195)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at 
org.apache.hadoop.fs.store.diag.StoreDiag.diagnostics(StoreDiag.java:655)
{code}

> wasb FS init hangs for minutes if the container name is wrong (e.g 
> wasb://example.azure/)
> -----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-15383
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15383
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>    Affects Versions: 3.1.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> Happened during some testing: an attempt to create a filesytem with the path 
> " wasb://example.azure/" hangs for at least 7 minutes, nothing logged at all. 
> Expected: fail fast with UnknownHost exception



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