Thank you Jean for the reading materials, I've been reading the source codes and searching on the internet and have a very vague idea how everything is working. Give me a few more days(don't want to embarrass myself), I will check back with you guys to see if my understanding is correct or not :D
Have a good day, thanks again :) On Mon, Mar 28, 2011 at 11:23 AM, Jean-Daniel Cryans <[email protected]>wrote: > I think you are asking for a bit too much :) > > Let's do it the other way, show us what you think are the answers to > your questions based on currently available documentation and by > looking at the source code, then I'm pretty sure someone will be happy > to verify it. > > Start by looking at the bigtable paper, then use Lars George's blog posts > like: > > http://www.larsgeorge.com/2009/10/hbase-architecture-101-storage.html > > http://www.larsgeorge.com/2010/01/hbase-architecture-101-write-ahead-log.html > http://www.larsgeorge.com/2010/05/hbase-file-locality-in-hdfs.html > > And then try diving into the code. > > Good luck! > > J-D > > On Sat, Mar 26, 2011 at 8:57 AM, Weishung Chung <[email protected]> > wrote: > > Dear fellow HBase developers, > > > > Could someone educate me and let me know how to figure out the number of > > disk seeks involved in a range search (startRow to endRow specified in > > Scan). Also, could anyone give me the details of all the steps involved > once > > the Scan for range retrieval is called? I know somehow it needs to figure > > out the regionservers used in hosting the rows but I still don't have a > > clear understanding the whole steps involved :( :( Also, there is a data > > index block in HFile, I was wondering how the index block is utilized in > > figuring out the location of all the rows. > > > > Thank you so much for satisfying my curiosity :) > > > > Have a good weekend and enjoy :) > > > > Wei Shung > > >
