@Override public InputSplit[] run() throws IOException {
            return getSplitsInternal(jobConf, numSplits);
          }
Instantiates a new predicate analyzer suitable for
determining how to push a filter down into the HBase scan,
based on the rules for what kinds of pushdown we currently support.

@param keyColumnName name of the Hive column mapped to the HBase row key

@return preconfigured predicate analyzer
hbase-handler/src/java/org/apache/hadoop/hive/hbase/HiveHBaseTableInputFormat.java