Siddharth, I don't know if you've already found this video but here's Phillip Shelley (Sears CTO) talking about Sears experience with Hadoop and their mainframe: http://youtu.be/8Rztad665po
They use 'ftp' to move data to and from Hadoop, which is a bottleneck, but they gained so many 'spare' MIPS and reduced the processing time significantly that the MIPS burnt in the ftp probably fade ino insignificance. BTW, according to the talk their COBOL programmers found Pig as a good tool to re-engineer some of their existing COBOL jobs. It may not be a solution to your problem but it should give you some confidence in using Hadoop to support the mainframe. Regards, Chris On 29 August 2012 03:14, Artem Ervits <[email protected]> wrote: > Can you read the data off backup tapes and dump it to flat files? > > > Artem Ervits > Data Analyst > New York Presbyterian Hospital > > *From*: Marcos Ortiz [mailto:[email protected]] > *Sent*: Tuesday, August 28, 2012 06:51 PM > *To*: [email protected] <[email protected]> > *Cc*: Siddharth Tiwari <[email protected]> > *Subject*: Re: Hadoop and MainFrame integration > > The problem with it, is that Hadoop depends on top of HDFS to storage in > blocks of 64/128 MB of size (or the size that you determine, 64 MB is the > de-facto size), and then make the calculations. > So, you need to move all your data to a HDFS cluster to use data in > MapReduce jobs if you want to make the calculations with Hadoop. > Best wishes > > El 28/08/2012 12:24, Siddharth Tiwari escribió: > > Hi Users. > > We have flat files on mainframes with around a billion records. We need to > sort them and then use them with different jobs on mainframe for report > generation. I was wondering was there any way I could integrate the > mainframe with hadoop do the sorting and keep the file on the sever itself > ( I do not want to ftp the file to a hadoop cluster and then ftp back the > sorted file to Mainframe as it would waste MIPS and nullify the advantage > ). This way I could save on MIPS and ultimately improve profitability. > > Thank you in advance > > > **------------------------** > *Cheers !!!* > *Siddharth Tiwari* > Have a refreshing day !!! > *"Every duty is holy, and devotion to duty is the highest form of worship > of God.�€ * > *"Maybe other people will try to limit me but I don't limit myself"* > > > <http://www.uci.cu/> > > > > > > <http://www.uci.cu/> > ------------------------------ > This electronic message is intended to be for the use only of the named > recipient, and may contain information that is confidential or privileged. > If you are not the intended recipient, you are hereby notified that any > disclosure, copying, distribution or use of the contents of this message is > strictly prohibited. If you have received this message in error or are not > the named recipient, please notify us immediately by contacting the sender > at the electronic mail address noted above, and delete and destroy all > copies of this message. Thank you. > > -------------------- > > This electronic message is intended to be for the use only of the named > recipient, and may contain information that is confidential or privileged. > If you are not the intended recipient, you are hereby notified that any > disclosure, copying, distribution or use of the contents of this message is > strictly prohibited. If you have received this message in error or are not > the named recipient, please notify us immediately by contacting the sender at > the electronic mail address noted above, and delete and destroy all copies of > this message. Thank you. > > > -------------------- > > This electronic message is intended to be for the use only of the named > recipient, and may contain information that is confidential or privileged. > If you are not the intended recipient, you are hereby notified that any > disclosure, copying, distribution or use of the contents of this message is > strictly prohibited. If you have received this message in error or are not > the named recipient, please notify us immediately by contacting the sender at > the electronic mail address noted above, and delete and destroy all copies of > this message. Thank you. > > > >
