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Posted to common-issues@hadoop.apache.org by "Greg Roelofs (JIRA)" <ji...@apache.org> on 2010/06/23 04:15:55 UTC
[jira] Updated: (HADOOP-6835) Support concatenated gzip and bzip2
files
[ https://issues.apache.org/jira/browse/HADOOP-6835?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Greg Roelofs updated HADOOP-6835:
---------------------------------
Hadoop Flags: [Incompatible change]
Release Note: Processing of concatenated gzip files formerly stopped (quietly) at the end of the first substream/"member"; now processing will continue to the end of the concatenated stream, like gzip(1) does.
Component/s: io
> Support concatenated gzip and bzip2 files
> -----------------------------------------
>
> Key: HADOOP-6835
> URL: https://issues.apache.org/jira/browse/HADOOP-6835
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Reporter: Tom White
> Assignee: Greg Roelofs
> Attachments: grr-hadoop-common.dif.20100614c, grr-hadoop-mapreduce.dif.20100614c, MR-469.v2.yahoo-0.20.2xx-branch.patch
>
>
> When running MapReduce with concatenated gzip files as input only the first part is read, which is confusing, to say the least. Concatenated gzip is described in http://www.gnu.org/software/gzip/manual/gzip.html#Advanced-usage and in http://www.ietf.org/rfc/rfc1952.txt. (See original report at http://www.nabble.com/Problem-with-Hadoop-and-concatenated-gzip-files-to21383097.html)
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