Hi David, Thanks for your reply. Some more questions about installing MRV1 using tarball. For the link ' https://ccp.cloudera.com/display/SUPPORT/CDH4+Downloadable+Tarballs', should I intall MRV1 using 'hadoop-0.20-mapreduce-0.20.2+1270' or 'hadoop-2.0.0+556' or both of them ( If you install CDH4 from a tarball, you will install YARN. To install MRv1 as well, install the separate MRv1 tarball (mr1-0.20.2+<n>) alongside the YARN one (hadoop-2.0.0+<n>). in ' https://ccp.cloudera.com/display/CDH4DOC/CDH4+Installation#CDH4Installation-WaysToInstallCDH4' )?
If using 'hadoop-0.20-mapreduce-0.20.2+1270', are the configurations same like CDH3? If not, would you please show me some link or docs to install MRV1? Thanks & Best Regards Jing Wang 2013/2/19 David Boyd <[email protected]> > Jing: > We are using CDH4.1.1 and CDH3 and the > base Apache Hadoop on several different efforts. > > My best cut at answering your questions is below > however the CDH lists will likely have better > information on some of them. > > > On 2/19/2013 3:03 AM, jing wang wrote: > >> Hi User, >> >> We're facing the challenge of which hadoop version to choose. >> We prefer to CDH4, but have a few qustions: >> 1.Are MRV1 and MRV2 sharing the same hdfs? >> > YES. > > > If so, can MRV1 upgrade > >> to MRV2 smoothly? >> > They should but we have not played with MRV2 much yet. > > > 2.If using MRV1, should our m/r code basing CDH3 be changed? >> > Some. You will certainly get deprecated warnings. Biggest issue > seems to be getting the right CDH4 libraries in the path. > > > 3.Is MRV1 stable enough to be used in production? >> > Yes. I have been beating on a CDH4 with MRV1 code heavily. > This includes running the SWIM benchmark with the Facebook > workload. > > Even cloudera does not thing MRV2 is quite stable enough yet. > > > >> >> Thanks & best regards, >> Jing Wang >> >> >> >> > -- > ========= mailto:dboyd@lorenzresearch.**com > <[email protected]>============ > David W. Boyd > Vice President, Operations > Lorenz Research, a Data Tactics corporation > 7901 Jones Branch, Suite 610 > Mclean, VA 22102 > office: +1-703-506-3735, ext 308 > fax: +1-703-506-6703 > cell: +1-703-402-7908 > ============== http://www.lorenzresearch.com/ ============ > > > The information contained in this message may be privileged > and/or confidential and protected from disclosure. > If the reader of this message is not the intended recipient > or an employee or agent responsible for delivering this message > to the intended recipient, you are hereby notified that any > dissemination, distribution or copying of this communication > is strictly prohibited. If you have received this communication > in error, please notify the sender immediately by replying to > this message and deleting the material from any computer. > > >
