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Date: Mon, 10 Nov 2008 17:25:44 -0800 (PST)
From: "Pete Wyckoff (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-4629) libhdfs sets read return code to 0
 when hadoop returns < 0
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    [ https://issues.apache.org/jira/browse/HADOOP-4629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12646435#action_12646435 ] 

Pete Wyckoff commented on HADOOP-4629:
--------------------------------------

a valid return for hadoop read is 0 bytes though - that does not mean EOF.  How does the caller differentiate between 0 bytes read and EOF in this case? 

> libhdfs sets read return code to 0 when hadoop returns < 0 
> -----------------------------------------------------------
>
>                 Key: HADOOP-4629
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4629
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: libhdfs
>    Affects Versions: 0.19.0, 0.20.0
>            Reporter: Pete Wyckoff
>            Assignee: Pete Wyckoff
>             Fix For: 0.20.0
>
>         Attachments: HADOOP-4629.txt
>
>
> libhdfs is changing the return code to 0 whenever hadoop returns < 0 on a read.  This means EOF cannot be determined correctly since it should have a return code of -1.

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