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https://issues.apache.org/jira/browse/HADOOP-14680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated HADOOP-14680:
------------------------------------
       Resolution: Fixed
    Fix Version/s: 2.9.0
           Status: Resolved  (was: Patch Available)

> Azure: IndexOutOfBoundsException in BlockBlobInputStream
> --------------------------------------------------------
>
>                 Key: HADOOP-14680
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14680
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/azure
>            Reporter: Rajesh Balamohan
>            Assignee: Thomas Marquardt
>            Priority: Minor
>             Fix For: 2.9.0, 3.0.0-beta1
>
>         Attachments: HADOOP-14680-001.patch, HADOOP-14680-branch-2.01.patch
>
>
> https://github.com/apache/hadoop/blob/trunk/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azure/BlockBlobInputStream.java#L361
> On certain conditions, BlockBlobInputStream can throw 
> IndexOutOfBoundsException. Following is an example
> {{length:297898, offset:4194304, buf.len:4492202, writePos:4194304}} : 
> In this case, {{MemoryOutputStream::capacity()}} would end up returning 
> negative value and can cause {{IndexOutOfBoundsException}}
> It should be {{return buffer.length - offset;}} to determine current capacity.



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