Re: Data processing in DFSClient

2012-01-19 Thread Joey Echeverria
Personally I would just use Har :) It sounds like an interesting project. You might find this document helpful: http://kazman.shidler.hawaii.edu/ArchDoc.html It was designed to help contributors navigate the HDFS source tree. -Joey On Thu, Jan 19, 2012 at 11:52 AM, Sesha Kumar wrote: >  I'm cu

Re: Data processing in DFSClient

2012-01-19 Thread Sesha Kumar
I'm currently working on this paper where we try to improve the performance of HDFS by combining small files into a single file (like HAR), but this merged file contains at the beginning of each block an index file which is similar to HAR index file. Datanode uses this index file to obtain the sma

RE: Data processing in DFSClient

2012-01-18 Thread Uma Maheswara Rao G
sesha...@gmail.com] Sent: Wednesday, January 18, 2012 8:24 PM To: hdfs-user@hadoop.apache.org Subject: Re: Data processing in DFSClient Sorry for the delay. I'm trying to implement an IEEE paper which combines a bunch of files into a single file and when the file is requested the datanode extracts t

Re: Data processing in DFSClient

2012-01-18 Thread Sesha Kumar
Sorry for the delay. I'm trying to implement an IEEE paper which combines a bunch of files into a single file and when the file is requested the datanode extracts the desired file from the block and sends the file to DFSClient.

Re: Data processing in DFSClient

2012-01-16 Thread Joey Echeverria
Sesha, What kind of processing are you attempting to do? Maybe it makes more sense to just implement a MapReduce job rather than modifying the datanodes? -Joey On Mon, Jan 16, 2012 at 9:20 AM, Sesha Kumar wrote: > Hey guys, > > Sorry for the typo in my last message.I have corrected it. > > I w

RE: Data processing in DFSClient

2012-01-16 Thread Uma Maheswara Rao G
Hi Shesha, Take a look at org.apache.hadoop.hdfs.server.datanode.BlockSender.java Regards, Uma From: Sesha Kumar [sesha...@gmail.com] Sent: Monday, January 16, 2012 7:50 PM To: hdfs-user@hadoop.apache.org Subject: Data processing in DFSClient Hey guys, Sorry f