ihtd.addFamily(hcd1);
ihtd.addFamily(hcd2);
ihtd.addFamily(hcd3);
ihtd.addFamily(hcd4);
IndexSpecification idx1 = new IndexSpecification("ScanMulIndex");
idx1.addIndexColumn(hcd1, "ql", ValueType.String, 10);
idx1.addIndexColumn(hcd2, "ql", ValueType.String, 10);
idx1.addIndexColumn(hcd3, "ql", ValueType.String, 10);
idx1.addIndexColumn(hcd4, "ql", ValueType.String, 10);
ihtd.addIndex(idx1);