My fellow superb hbase experts, Looking at the HFile specs and have some questions. How is a particular table cell in a HBase table being represented in the HFile? Does the key of the key value pair represent the rowkey+column family:qualifier+timestamp and the value represent the corresponding cell value? If so, to read a row, multiple key/value pair reads have to be done?
Thank you :) On Tue, Mar 22, 2011 at 9:09 AM, Weishung Chung <[email protected]> wrote: > Thank you, I will definitely take a look. Also, the TFile spec below helps > me to understand more, > what an exciting work ! > > > https://issues.apache.org/jira/secure/attachment/12396286/TFile+Specification+20081217.pdf > > <https://issues.apache.org/jira/secure/attachment/12396286/TFile+Specification+20081217.pdf> > On Mon, Mar 21, 2011 at 11:41 AM, Doug Cutting <[email protected]> wrote: > >> On 03/19/2011 09:01 AM, Weishung Chung wrote: >> > I am browsing through the hadoop.io package and was wondering what >> other >> > file formats are available in hadoop other than SequenceFile and TFile? >> > Is all data written through hadoop including those from hbase saved in >> the >> > above formats? It seems like SequenceFile is in key value pair format. >> >> Avro includes a file format that works with Hadoop. >> >> >> http://avro.apache.org/docs/current/api/java/org/apache/avro/mapred/package-summary.html >> >> Doug >> > >
