Get free Cloudera Impala, in PDF format, for free from the Cloudera website, in association with the Strata Conference and Hadoop World.  See the below link for the book info from the publisher as well as the link to download ...
21 January 2014 Big Data, Cassandra, Cloudera, Hadoop News, Hadoop Tutorials, HBase, Hive, Impala, MapReduce News, MongoDB News, NoSQL News, Pig, Predictive Analytics