As I discussed in an earlier column, SQL Server keeps a plan cached for each query it sees (assuming the query requires planning in the first place, of course). That's great for speeding up processing ...
Impala changes the equation for Hadoop, giving users answers to their queries in seconds rather than hours, says Cloudera CEO Mike Olson in the Cube at the Strata/HadoopWorld 2012 conference. His ...
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