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https://issues.apache.org/jira/browse/HADOOP-17596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Surendra Singh Lilhore resolved HADOOP-17596.
---------------------------------------------
    Fix Version/s: 3.3.2
       Resolution: Fixed

> ABFS: Change default Readahead Queue Depth from num(processors) to const
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-17596
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17596
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>    Affects Versions: 3.3.1
>            Reporter: Sumangala Patki
>            Assignee: Sumangala Patki
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0, 3.3.2
>
>          Time Spent: 4.5h
>  Remaining Estimate: 0h
>
> The default value of readahead queue depth is currently set to the number of 
> available processors. However, this can result in one inputstream instance 
> consuming more processor time. To ensure equal thread allocation during read 
> for all inputstreams created in a session, we change the default readahead 
> queue depth to a constant (2).



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