HBase and Star Schema

2010-06-13 Thread Sean Bigdatafun
I am reading a blog related to HBase and its application in OLAP. http://www.jroller.com/otis/entry/hbase_vs_rdbms_star_schema In that blog, Jean-Daniel mentioned that "If you can afford to denormalize your data by putting the dimension table data into the same table as the fact table, then you can

Re: Custom WritableByteArrayComparable crashing. Need help please (UNCLASSIFIED)

2010-06-13 Thread Ryan Rawson
Because List is an interface, the deserialization probably uses an ArrayList to hold the incoming objects. -ryan On Sat, Jun 12, 2010 at 12:15 PM, Ted Yu wrote: > I meant to say why subclasses of List use code for List.class. > There is no such handling for subclasses of WritableByteArrayCompara

RE: ICV concurrency problem (?)

2010-06-13 Thread Mark Laffoon
If anybody cares, I found the problem: my region servers weren't time sync'd. Whenever, the job involved enough data and enough servers, puts would fail due to timestamp issues. Thanks for the help and advice. -Original Message- From: Mark Laffoon [mailto:mlaff...@semanticresearch.com] S