Re: Hadoop over Cassandra

2010-05-17 Thread Yang
interesting that I just came up with the same question this morning and found https://issues.apache.org/jira/browse/CASSANDRA-342 http://mail-archives.apache.org/mod_mbox/incubator-cassandra-dev/200907.mbox/ these give u some perspective into the thinking behind the implementation On Mon, Ma

Hadoop over Cassandra

2010-05-17 Thread Yan Virin
Hi, Can someone explain how this works? As long as I know, there is no execution engine in Cassandra alone, so I assume that Hadoop gives the MapReduce execution engine which uses Cassandra as the distributed storage? Is data locality preserved? How mature this "couple" is? How is the performance o