You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-issues@hadoop.apache.org by "Yu Li (JIRA)" <ji...@apache.org> on 2013/08/11 20:39:47 UTC

[jira] [Commented] (HADOOP-9863) Snappy compression in branch1 cannot work on Big-Endian 64 bit platform w/o backporting HADOOP-8686

    [ https://issues.apache.org/jira/browse/HADOOP-9863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13736371#comment-13736371 ] 

Yu Li commented on HADOOP-9863:
-------------------------------

In the attached patch I've only backported the changes made on SnappyCompressor.c in HADOOP-8686 to save some time because other parts are not that critical. Please let me know if you prefer me to backport the whole patch, thanks.
                
> Snappy compression in branch1 cannot work on Big-Endian 64 bit platform w/o backporting HADOOP-8686
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-9863
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9863
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 1.1.1, 1.1.2, 1.2.1
>            Reporter: Yu Li
>            Assignee: Yu Li
>              Labels: native, ppc64, snappy
>         Attachments: HADOOP-9863.patch
>
>
> w/o changes made in HADOOP-8686 on SnappyCompressor.c, snappy compression in branch-1 hadoop on big endian 64 bit platform (ppc64 for example) will generate incorrect .snappy (almost-empty) file because of type casting from size_t to jint. Will include more detailed analysis in comments.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira