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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11379) DFSInputStream may infinite loop requesting block locations
Date Mon, 13 Feb 2017 16:21:42 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15863930#comment-15863930
] 

Sean Busbey commented on HDFS-11379:
------------------------------------

could we get this into a 2.7 release? (maybe a 2.6 if 2.6 is similarly impacted?)

> 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
>             Fix For: 2.8.0, 3.0.0-alpha3
>
>         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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