You can run another map-only job to read convert the deflated files and
write them out in the format you want.
Runping
> -----Original Message-----
> From: Jim R. Wilson [mailto:
wilson.jim.r@...]
> Sent: Wednesday, June 04, 2008 4:13 PM
> To:
core-user@...
> Subject: [core-user] Help deflating output files
>
> Hi all,
>
> I'm using hadoop-streaming to execute Python jobs in an EC2 cluster.
> The output directory in HDFS has part-00000.deflate files - how can I
> deflate them back into regular text?
>
> In my hadoop-site.xml, I unfortunately have:
> <property>
> <name>mapred.output.compress</name>
> <value>true</value>
> </property>
> <property>
> <name>mapred.output.compression.type</name>
> <value>BLOCK</value>
> </property>
>
> Of course, I could re-build my AMI's without this option, but is there
> some way I can read my deflate files without going through that
> hassle? I'm hoping there's a command-line program to read these files
> since I'm none of my code is Java.
>
> Thanks in advance for any help. :)
>
> -- Jim R. Wilson (jimbojw)
