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From "Thomas Marquardt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14680) Azure: IndexOutOfBoundsException in BlockBlobInputStream
Date Tue, 25 Jul 2017 21:07:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16100789#comment-16100789
] 

Thomas Marquardt commented on HADOOP-14680:
-------------------------------------------

All WASB tests are passing with the HADOOP-14680-001.patch except one unrelated test failure:

    Tests run: 762, Failures: 1, Errors: 0, Skipped: 70

    Failed tests: TestWasbRemoteCallHelper.testWhenOneInstanceIsDown:359

The test failure is unrelated to the HADOOP-14680-001.patch.  It may be related to HADOOP-14642
(commit #2843c6)

> 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
>         Attachments: HADOOP-14680-001.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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