compression used for Hive 0.13 benchmark

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    Carter Shanklin

    Greg, defaults were used for both ORCFile and RCFile, i.e. “stored as orc” and “stored as rcfile”. As you probably know, each of these formats uses a variety of compression techniques and each approaches compression quite differently. ORCFile uses typed columnar compression in all cases followed by an optional additional compression, by default using zlib. RCFile also uses zlib to compress the actual data by default. Hope that clears things up.

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