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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3166) SpillThread throws ArrayIndexOutOfBoundsException, which is ignored by MapTask
Date Thu, 03 Apr 2008 21:53:24 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Douglas updated HADOOP-3166:
----------------------------------

    Attachment: 3166-0.patch

> SpillThread throws ArrayIndexOutOfBoundsException, which is ignored by MapTask
> ------------------------------------------------------------------------------
>
>                 Key: HADOOP-3166
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3166
>             Project: Hadoop Core
>          Issue Type: Bug
>            Reporter: Chris Douglas
>            Assignee: Chris Douglas
>            Priority: Blocker
>             Fix For: 0.17.0
>
>         Attachments: 3166-0.patch
>
>
> There is a flaw in the value bounds checking introduced by HADOOP-2919. When the index
table determines the end offset of the value, it fails to detect that the next entry falls
off the end of the array. This remains undetected by MapTask, which only notes IOExceptions
from the spill thread. Both the boundary checking and the exception handling must be fixed.

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