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Posted to common-issues@hadoop.apache.org by "Harsh J (JIRA)" <ji...@apache.org> on 2012/05/30 19:48:23 UTC

[jira] [Commented] (HADOOP-8449) hadoop fs -text fails with compressed sequence files with the codec file extension

    [ https://issues.apache.org/jira/browse/HADOOP-8449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13285845#comment-13285845 ] 

Harsh J commented on HADOOP-8449:
---------------------------------

Snappy is currently un-detectable code wise, at least AFAICT, since it lacks a container format. However, yeah, we should check for SEQ magic header (and the likes) first I think.
                
> hadoop fs -text fails with compressed sequence files with the codec file extension
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-8449
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8449
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 1.0.3, 2.0.0-alpha
>            Reporter: Joey Echeverria
>            Priority: Minor
>
> When the -text command is run on a file and the file ends in the default extension for a codec (e.g. snappy or gz), but is a compressed sequence file, the command will fail.
> The issue is that it assumes that if it matches the extension, then it's plain compressed file. It might be more helpful to check if it's a sequence file first, and then check the file extension second.

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