In BigTable/GFS and Cassandra terminology, what is the definition of a SSTable?

Can any one explain me the key difference between Apache Hadoop vs Google Bigdata Which one is better(hadoop or google big data).

Problem description: For our application (RHEL 5,6) we use shared storage (EVA) and need to find OCFS2 replacement (not supported on RHEL 6) for several FS shared between nodes (2-7). Current tips ...

Basically whole question is in the title. I'm wondering if it's possible to append to file located on HDFS from multiple computers simultaneously? Something like storing stream of events constantly...

I was reading about GFS and its consistency model but I'm failing to grasp some of it. In particular, can someone provide me with a specific example scenario (or an explanation of why it cannot ha...