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The "HadoopSupport" page has been changed by EricGilmore. http://wiki.apache.org/cassandra/HadoopSupport?action=diff&rev1=25&rev2=26 -------------------------------------------------- The nice thing about having a `TaskTracker` on every node is that you get data locality and your analytics engine scales with your data. You also never need to shuttle around your data once you've performed analytics on it - you simply output to Cassandra and you are able to access that data with high random-read performance. - One configuration note on getting the task trackers to be able to perform queries over Cassandra, you'll want to update your `HADOOP_CLASSPATH` in your `<hadoop>/conf/hadoop-env.sh` to include the Cassandra lib libraries. For example you'll want to do something like this in the `hadoop-env.sh` on each of your task trackers: + One configuration note on getting the task trackers to be able to perform queries over Cassandra: you'll want to update your `HADOOP_CLASSPATH` in your `<hadoop>/conf/hadoop-env.sh` to include the Cassandra lib libraries. For example you'll want to do something like this in the `hadoop-env.sh` on each of your task trackers: {{{ export HADOOP_CLASSPATH=/opt/cassandra/lib/*:$HADOOP_CLASSPATH
