drill

0d5eda83 - DRILL-4020: The not-equal operator returns incorrect results when used on the HBase row key

DRILL-4020: The not-equal operator returns incorrect results when used on the HBase row key - Added a condition that checks if the filter to the scan specification doesn't have NOT_EQUAL operator - Added testFilterPushDownRowKeyNotEqual() to TestHBaseFilterPushDown This closes #309