On Thu, Aug 5, 2010 at 4:52 PM, Bobby Dennett <bdenn...@gmail.com> wrote:
> Hi Josh, > > No real pain points... just trying to investigate/research the "best" > way to create the necessary libraries and jar files to support LZO > compression in Hadoop. In particular, there are the 2 "repositories" > to build from and I am trying to find out if one should be used over > the other. For instance, in your previous posting, you refer to > hadoop-gpl-compression while the Twitter blog post from last year > mentions the Hadoop-LZO project. Briefly looking, it seems Hadoop-LZO > is preferable but we're curious if there are any caveats/gotchas we > should be aware of. > Yes, definitely use the hadoop-lzo project from github -- either from my repo or from kevinweil's (the two are kept in sync) The repo on Google Code has a number of known bugs, which is why we forked it over to github last year. -Todd On Thu, Aug 5, 2010 at 15:59, Josh Patterson <j...@cloudera.com> wrote: > > Bobby, > > > > We're working hard to make compression easier, the biggest hurdle > > currently is the licensing issues around the LZO codec libs (GPL, > > which is not compatible with ASF bsd-style license). > > > > Outside of making the changes to the mapred-site.xml file, with your > > setup would do you view as the biggest pain point? > > > > Josh Patterson > > Cloudera > > > > On Thu, Aug 5, 2010 at 6:52 PM, Bobby Dennett > > <bdennett+softw...@gmail.com <bdennett%2bsoftw...@gmail.com>> wrote: > >> We are looking to enable LZO compression of the map outputs on our > >> Cloudera 0.20.1 cluster. It seems there are various sets of > >> instructions available and I am curious what your thoughts are > >> regarding which one would be best for our Hadoop distribution and OS > >> (Ubuntu 8.04 64-bit). In particular, hadoop-gpl-compression > >> (http://code.google.com/p/hadoop-gpl-compression) vs. hadoop-lzo > >> (http://github.com/kevinweil/hadoop-lzo). > >> > >> Some of what appear to be the better instructions/guides out there: > >> * Josh Patterson's reply on June 25th to the "Newbie to HDFS > >> compression" thread -- > >> > http://mail-archives.apache.org/mod_mbox/hadoop-common-user/201006.mbox/%3caanlktileo-q8useip8y3na9pdyhlyufippr0in0lk...@mail.gmail.com%3e > >> * hadoop-gpl-compression FAQ -- > >> http://code.google.com/p/hadoop-gpl-compression/wiki/FAQ > >> * "Hadoop at Twitter (part 1): Splittable LZO Compression" blog post > >> -- > http://www.cloudera.com/blog/2009/11/hadoop-at-twitter-part-1-splittable-lzo-compression/ > >> > >> Thanks in advance, > >> -Bobby > >> > > > -- Todd Lipcon Software Engineer, Cloudera
