@Test
  public final void testSelectAllFetchSize() throws Exception {
    doTestSelectAll(tableName, 100, 20);
  }
Execute "set x" and extract value from key=val format result
Verify the extracted value
@param key
@param expectedVal
@throws Exception
itests/hive-unit/src/test/java/org/apache/hive/jdbc/TestJdbcDriver2.java