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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11379) DFSInputStream may infinite loop requesting block locations
Date Thu, 09 Feb 2017 17:08:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15859820#comment-15859820
] 

Kihwal Lee commented on HDFS-11379:
-----------------------------------

I will review it today.

> DFSInputStream may infinite loop requesting block locations
> -----------------------------------------------------------
>
>                 Key: HDFS-11379
>                 URL: https://issues.apache.org/jira/browse/HDFS-11379
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 2.7.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>         Attachments: HDFS-11379.branch-2.patch, HDFS-11379.trunk.patch
>
>
> DFSInputStream creation caches file size and initial range of locations.  If the file
is truncated (or replaced) and the client attempts to read outside the initial range, the
client goes into a tight infinite looping requesting locations for the nonexistent range.



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