thank u that was very helpful! On Mon, Sep 10, 2012 at 1:04 AM, Eli Collins <e...@cloudera.com> wrote:
> Peter, > > Thanks for the info. Do you guys plan to contribute the rewritten s3 > code (assume you're referring to org.apache.hadoop.fs.s3) back to > Apache? > > Thanks, > Eli > > On Sun, Sep 9, 2012 at 12:38 PM, Sirota, Peter <sir...@amazon.com> wrote: > > Hi, > > > > The major differences are in s3 file system that has been rewritten in > EMR and in Hadoop interactions with S3. Other differences are in detecting > various failure conditions. > > > > Outside these it's Apache Hadoop. Here is a list of patches EMR applied > on top of 1.0.3 Hadoop > > > http://docs.amazonwebservices.com/ElasticMapReduce/latest/DeveloperGuide/EnvironmentConfig_AMIHadoopPatches.html > > > > Regards, > > Peter > > > > > > > > On Sep 9, 2012, at 11:29 AM, "Momina Khan" <momina.a...@gmail.com> > wrote: > > > >> hi all! > >> > >> could someone please point out key differences between hadoop code and > >> Amazon's Elastic MapReduce. I am particularly interested in ways that > >> hadoop code is changed/optimized to run on efficiently EC2. > >> > >> cheers! > >> momina >
