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https://issues.apache.org/jira/browse/HADOOP-16340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16867688#comment-16867688
 ] 

Larry McCay commented on HADOOP-16340:
--------------------------------------

[~ste...@apache.org] , [~DanielZhou] - Where are we on the review for this 
patch?

 

> ABFS driver continues to retry on IOException responses from REST operations
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-16340
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16340
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>    Affects Versions: 3.3.0
>            Reporter: Robert Levas
>            Assignee: Robert Levas
>            Priority: Major
>
> ABFS driver continues to retry (until retry count is exhausted) upon 
> IOException responses from REST operations.  
> In the exception hander for IOExceptions at 
> [https://github.com/apache/hadoop/blob/65f60e56b082faf92e1cd3daee2569d8fc669c67/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsRestOperation.java#L174-L197],
>  there is no way exit out of the retry loop by re-throwing an exception 
> unless one of the following conditions have been met:
>  * The retry limit was hit
>  * An HttpException was encountered
> From an 
> {{org.apache.hadoop.fs.azurebfs.extensions.CustomTokenProviderAdaptee}} or 
> {{org.apache.hadoop.fs.azurebfs.extensions.CustomDelegationTokenManager}} 
> implementation, there is no way to create an 
> {{org.apache.hadoop.fs.azurebfs.oauth2.AzureADAuthenticator.HttpException}} 
> since the constructor is package private. 
> Either the exception handler needs to generic handle exceptions like 
> {{java.nio.file.AccessDeniedException}} and 
> {{java.io.FileNotFoundException}}, or the access to 
> {{org.apache.hadoop.fs.azurebfs.oauth2.AzureADAuthenticator.HttpException}} 
> needs to be set to that custom implementations can use it. 
>  



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